Our in-house experts typically reply within one business day.
CURT
Verify Fitment
Select your vehicle to confirm this part fits.
2010 - 2011 Lincoln MKT
Confirmed to Fit
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
On Sale Today
Original price was $159.90. Current price is $149.35.You save $10.55 (7%)
Free Shipping
Ships free on all orders
Authorized Dealer
Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Tue, Aug 11 - Fri, Aug 14
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
Includes mounting hardware & plug & plan harness
Limited lifetime warranty
Includes mounting hardware & plug & play Harness
Finish: Blank
Installation Difficulty: Novice
Installation Time Exact (Minutes): 20
Introducing the CURT Discovery NEXT, a powerful, compact, and user-friendly brake controller designed to ensure reliable operation of your electric trailer brakes right from the comfort of your vehicle's cabin. With its sleek and modern design, as well as a low-profile bracket for improved clearance, this controller delivers exceptional control. Manage the braking system of 2-8 trailers at a time, accommodating 1-4 axles, with ease thanks to its fully adjustable settings that seamlessly adapt to your specific vehicle-trailer configuration. The Discovery NEXT represents an upgraded and enhanced iteration of our highly regarded Discovery brake controller. It boasts compatibility with a wide range of brake systems, including low-volt, PWM, ABS, cruise control, and electric over hydraulic brakes. Its slim profile strikes a balance between functionality and modern aesthetics, ensuring powerful brake control is right at your fingertips without overwhelming your vehicle's dashboard. Stay informed about your brake settings at a glance, courtesy of the LED display that showcases power adjustments in precise 0.5 increments. The display also provides comprehensive full-text diagnostics, simplifying troubleshooting, while the adjustable brightness guarantees optimal visibility for towing during any time of the day or night. Moreover, the included unique mounting bracket further enhances clearance, allowing for an unobtrusive installation. Equipped with a time-delay feature, the Discovery NEXT brake controller offers fully adjustable power and ramp time to achieve precise control. With a selection of 10 gain settings and nine load settings, you can finely calibrate the controller to align perfectly with your specific towing requirements. The ramp-up progress is clearly indicated through LED indicators, and the brightness is adjustable to suit the conditions of daytime or nighttime towing.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-9494One-Year Limited
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2010 - 2011 | Lincoln MKT | — |
The 2010-2011 Lincoln MKT CURT Discovery NEXT Time-Delay Trailer Brake Controller for 1-4 Axles #51126 (Part #CURTBC1690) fits 2010-2011 Lincoln MKT models. The 2011 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2010-2011 Lincoln MKT CURT Discovery NEXT Time-Delay Trailer Brake Controller for 1-4 Axles #51126 (Part #CURTBC1690) fits the following vehicles: 2010-2011 Lincoln MKT. Always verify your specific year, make, and model before ordering.
Yes, the 2010-2011 Lincoln MKT CURT Discovery NEXT Time-Delay Trailer Brake Controller for 1-4 Axles #51126 (Part #CURTBC1690) is designed to fit the 2010-2011 Lincoln MKT.
The 2010-2011 Lincoln MKT CURT Discovery NEXT Time-Delay Trailer Brake Controller for 1-4 Axles #51126 (Part #CURTBC1690) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the CURT brake control harness (51322 or 51323) is compatible with Ford F-150 models, including F-150 (new body), F-150 Heritage (old body), and F-150 / F-250 / F-350 variants. However, the manual does not specify which part number applies to which F-150 generation. Contact CURT at 1.877.287.8634 to confirm the correct part number for your specific year and body style.
The CURT brake control harness is listed as compatible with Ford Windstar models that have a factory tow package. However, some Ford Windstar models are not equipped with a brake control connector at all. Before purchasing, verify that your Windstar has a 6-pin brake control harness connector under the dash near the center console. If your vehicle lacks this connector, you will need the universal brake control wiring kit #51500 instead.
Yes, the CURT brake control harness (51322 or 51323) is compatible with Land Rover Range Rover Evoque. The harness connects to the 6-pin brake control connector located under the dash near the center console.
Some older vehicles are equipped with a 4-pin connector instead of the standard 6-pin connector. The CURT brake control harness is designed for 6-pin connectors. If your vehicle has a 4-pin connector, you will need the universal brake control wiring kit #51500, which can be adapted to work with older connector types. Refer to the #51500 kit installation instructions for guidance.
On a Ford Econoline Van, the 6-pin brake control harness connector is located under the dash to the left of the steering column, near the emergency brake pedal (location BH1).
On all vehicles except the Ford Econoline Van, the 6-pin brake control harness connector is located under the dash near the center console (location BH2). The connector will be similar in appearance to the CURT brake control harness connector.
The manual does not specify whether the battery must be disconnected. However, the installation involves verifying battery power at the connector and connecting electrical components. It is recommended practice to disconnect the negative battery terminal before working with vehicle electrical systems. Consult your vehicle's service manual or a qualified technician if you are unsure.
A test light or multimeter is required to verify battery power at the brake control connector (Step 2). The harness is secured with provided cable ties. If the vehicle does not have power at the connector and you need to install the universal brake control wiring kit #51500, you will need wire cutters and butt connectors to splice wires. Refer to the #51500 kit instructions for additional tools required for that installation.
In Step 2, carefully probe the 6-pin brake control connector with a test light to check for battery power (+). Alternatively, you can follow the wires from the connector to their source to verify they are connected. Ensure the wires do not dead-end without connections behind the instrument panel. If power is confirmed, proceed to Step 4. If no power is detected, you will need to install the universal brake control wiring kit #51500.
Insert the connector on the CURT brake control harness into the vehicle's 6-pin brake control connector. Make sure the connector is fully inserted and the locking tabs are in place to ensure a secure connection.
Insert the black connector on the CURT brake control harness into the brake control unit's quick plug connector. Secure the harness with the provided cable ties, being careful to avoid any pinch points that could damage the wires.
No, the CURT brake control harness connects directly to the factory 6-pin connector without modification, provided the connector has battery power. If your vehicle does not supply power to the connector, you will need to install the universal brake control wiring kit #51500, which requires cutting and splicing the factory wires. In that case, the factory harness must be modified by cutting the battery wire and trailer brake wire, then connecting them to the universal kit wires using butt connectors.
No wire cutting is required for a standard CURT brake control harness installation if your vehicle has a powered 6-pin brake control connector. However, if your vehicle does not supply power to the connector, you must install the universal brake control wiring kit #51500, which requires cutting the battery wire and trailer brake wire from the factory connector and splicing them to the universal kit wires using butt connectors. After cutting, you must cap and/or tape the exposed ends to prevent shorting.
After cutting the battery wire and trailer brake wire to install the universal brake control wiring kit #51500, you must cap and/or tape the exposed ends of the cut wires to prevent electrical shorting. This is a critical safety step that must be completed before the system is powered.
After completing the installation, test the brake control harness for proper function by following the procedures outlined in the brake control unit's instruction manual. The manual emphasizes that all installation steps must be followed to ensure the harness functions properly. Mount the brake control unit as directed in its manual and perform the test procedures specified there.
The CURT brake control harness includes the harness assembly with a 6-pin vehicle connector and a black quick plug connector for the brake control unit. Cable ties are provided to secure the harness. The brake control unit itself is not included and must be purchased separately.
No, the brake control unit is not included with the CURT brake control harness. The harness is designed to connect to a separately purchased brake control unit. Refer to the brake control unit's instruction manual for mounting and operation details.
The CURT brake control harness fits Ford Bronco, Econoline Van, Excursion, Expedition, Explorer (with factory tow package), F-150, F-250, F-350, Flex, Windstar (with factory tow package), Land Rover LR3, LR4, Range Rover Evoque, Range Rover, Lincoln Mark LT, MKT (with factory tow package), Navigator, and Mercury Mountaineer (with factory tow package). Your vehicle must have a 6-pin brake control connector under the dash. Contact CURT at 1.877.287.8634 to confirm the correct part number for your specific year.
You need a test light or multimeter to verify battery power at the connector. The harness is secured with provided cable ties. If your vehicle lacks power at the connector and requires the universal brake control wiring kit #51500, you will also need wire cutters and butt connectors.
No drilling is required. Wire cutting is only necessary if your vehicle lacks power at the brake control connector and you must install the universal brake control wiring kit #51500. In that case, you will cut the battery and trailer brake wires and splice them with butt connectors, then cap the exposed ends to prevent shorting.
If you cut wires to install the universal brake control wiring kit, you must cap and/or tape the exposed ends to prevent electrical shorting. Secure the harness with cable ties, avoiding pinch points. All installation steps must be followed to ensure proper function. Test the system using the brake control unit's instruction manual.
Mount the brake control unit as directed in its instruction manual and perform the test procedures specified there. All installation steps must be followed to ensure the harness functions properly.
The Discovery™ Next Brake Controller (model 51126) is an electronic brake control system that manages trailer brake application based on tow vehicle brake pedal input or manual override. It features an LED display showing output power from 0.5 to 9.9, adjustable gain and load sensitivity controls, manual override capability, and day/night display modes. The controller is time-based, ramping up to full power over time according to gain and load settings.
The 51126 is designed for tow vehicles equipped with a factory brake control plug or compatible with CURT quick plug harnesses. Most trucks and utility vehicles have a factory plug that allows quick brake control installation. Check your vehicle owner's manual for plug availability and location. If your vehicle does not have a factory brake control plug, CURT offers the universal brake control wiring kit #51500. For specific vehicle applications, consult the CURT catalog.
If your vehicle is equipped with a factory brake controller or integrated trailer brake control (ITBC), consult your vehicle owner's manual for any necessary installation instructions. Removal of factory-equipped brake controls may require a dealer to service the harness for it to function properly. Note that removal of the factory quick plug can void the warranty.
You will need: a drill, 1/8" diameter drill bit, Phillips screwdriver, and a pry tool. These tools are used for drilling mounting holes, installing mounting screws, and removing anti-rattle foam from the vehicle plug.
The kit includes: (1) main module with CURT quickplug, (2) mounting bracket, (3) mounting screws, (4) base plate adhesive pad, and (5) cable ties. Depending on your vehicle, you may also need a CURT custom vehicle harness, CURT quick plug with pigtails (#51515 or #51516), or the universal brake control wiring kit (#51500).
The main module and mounting hardware are included, but the wiring harness is not. You will need one of the following: a CURT custom vehicle harness (specific to your vehicle; check CURT catalog for availability), CURT quick plug with pigtails (#51515 or #51516), or the CURT universal brake control wiring kit (#51500) if your vehicle does not have a factory brake control plug.
Yes. Disconnect the tow vehicle's negative battery terminal from its battery post before beginning the installation process. This is a critical safety step to prevent electrical damage and ensure safe wiring.
Locate the vehicle plug and remove any anti-rattle foam. Remove the dust cover before connecting the CURT custom wiring harness. After connecting, route the harness into the dash area, ensuring it is out of the way of any moving parts. Secure the harness with the provided cable ties. Check that your foot controls are not obstructed by the harness.
Use minimum 10-gauge stranded wire for the positive (black) and ground (white) connections to the battery. The blue wire from the trailer plug 'BRAKE' terminal to the brake control must be 10-gauge. All connections to the brake control use 10/12-gauge butt connectors. The red brake input wire is required to activate the brake control. The 30-amp auto-reset circuit breaker must be mounted as close to the battery as possible.
The positive wire (with 30-amp circuit breaker) and ground wires must be connected directly to the tow vehicle's battery using a minimum of 10-gauge stranded wire. Connecting to existing wiring or an alternate ground may damage the vehicle's circuits, lead to failure of the brake control module, loss of trailer brakes, or vehicle fire.
When passing wires through sheet metal, always go through an existing grommet. If there is no grommet, install one or use silicone sealant to protect the wires from sharp edges. This prevents wire damage and potential electrical hazards.
Mount the 30-amp auto-reset circuit breaker as close to the battery as possible. The black wire from the brake control connects to the 'AUX' side of the circuit breaker, which then connects to the battery.
Drilling is optional and depends on your mounting method. If you choose screw installation (in addition to the adhesive pad), you will use a 1/8" diameter drill bit to drill holes through the double-sided adhesive pad to mark the mounting locations on the dash. Adhesive-only mounting does not require drilling.
1. Mount the unit securely to a solid surface easily accessible to the driver, ensuring the area behind the mounting location is clear. 2. Hold the mounting bracket in position and mark hole locations. 3. Peel off one release liner of the double-sided adhesive pad and stick it onto the brake controller mount. 4. (Optional) If using screws, drill 1/8" holes through the adhesive pad to see marked locations. 5. Remove the second release liner and firmly press the mount to the dash. 6. (Optional) Install and tighten screws with a Phillips screwdriver, being careful not to over-tighten. 7. Slide the controller onto the mount until it locks into place; you will hear a clicking noise when correctly installed.
No. The angle at which the controller is mounted will not affect the operation or calibration of the controller.
Once all electrical connections are complete inside the vehicle, plug the trailer electrical connector into the tow vehicle plug. The brake controller will sense the trailer upon connecting after 10-15 seconds. Upon connecting and applying the brakes, the brake controller will sense the trailer immediately. Every time the vehicle starts, the controller will restart, displaying the start-up icon. Once the display becomes blank/black, it will remain blank/black until the manual control is applied, the orange adjustment rocker switches are pressed, or the vehicle brake pedal is applied.
Make preliminary gain and load adjustments with the trailer connected and engine running to ensure proper charge voltage. Adjust the output/gain by pressing the orange rocker switches to the left of the display to the desired range. Adjust the controller's brake load by pressing the right rocker switch until the brake control is in the desired range.
Disconnect the electrical plug between the trailer and tow vehicle before testing a breakaway switch. Failure to disconnect may damage the brake control unit.
Avoid mounting the brake control module near a CB radio or other RF (radio frequency) transmitter, as this can interfere with the controller's operation.
Connect the module to the quick plug to provide accessible wires. Connect the white ground wire of the main module and the ground wire of a standard 1156 automotive bulb in a socket to the negative terminal of a charged 12V battery. Leave the red brake input wire and blue output wire disconnected. Connect the black battery wire of the module to the positive terminal of the 12V battery. If wired properly and operational, the display will power on. You can use CURT #51515/#51516 quick plug with pigtails or push pins to make direct connections to the female terminals. Ensure all wires, push pins and test leads do not contact each other or any metal surface to avoid damage.
Adjust the output setting to its maximum setting of 10 and the sensitivity settings to its most aggressive setting of 9. Ensure the blue trailer brake signal wire is connected to the bulb. Once the start-up screen disappears or turns black, the control module is ready. Activate the manual control up to its full output. While actuating the manual control, the brightness of the bulb will correspond with the output shown by the brake control. The display will ramp up according to the pressure applied to the manual control lever, and the light will turn on in accordance with the amount of pressure applied. Release the manual control to deactivate and turn off the light.
To recalibrate the brake controller, restart the vehicle or disconnect the controller from the vehicle. The brake controller will retain the last settings applied upon restarting.
Yes. The gain and load controls can be adjusted anytime when trailer load changes and adjustment is needed for changing road or driving conditions. This process should be repeated for any weather, weight or loading changes to the items in/on the vehicle or trailer.
Check for no power to controller, no ground, reversed black and white wires, or a blown circuit breaker. Review the 'Wiring' section of the manual and check and repair all connections. Verify that the negative battery terminal is properly connected, the positive and ground wires are connected directly to the battery with minimum 10-gauge stranded wire, and the 30-amp circuit breaker is functioning.
This indicates the red wire is connected to the wrong side of the stoplight switch or to an incorrect wire. Check and repair the brake control wiring connections according to the 'Wiring' section of the manual. The red wire must be connected to the correct terminal of the stoplight switch to properly signal brake application.
This indicates the tow vehicle's system voltage is low. The brake controller is not receiving enough voltage to provide the trailer with the needed voltage at the settings the controller is at. Check the tow vehicle's battery and charging system. Service may be needed to restore proper charging voltage.
This indicates the red wire is connected to the ground side of the stoplight switch or is shorted to ground. Check the brake control wiring and repair the connection. The issue may require a change to the switch setting. Refer to the 'Manual Control' section of the manual for proper wiring configuration.
This indicates a short in the blue wire output circuit or trailer plug. Locate and correct the short in the wiring or connector. Inspect the blue wire for damage, pinching, or contact with metal surfaces, and check the trailer plug connections for proper fit and blockages.
This indicates inadequate battery or ground wiring to the brake controller. Check the brake controller wiring, particularly the black (battery positive) and white (ground) wires. Ensure they are connected directly to the battery with minimum 10-gauge stranded wire and that all connections are secure.
This indicates no connection between the brake controller and trailer brakes in the blue wire circuit. Confirm the connection to the trailer is properly made. Confirm connector terminal positions are correct. Check the trailer for proper brake wiring and connections. Verify the blue wire from the tow vehicle's trailer plug 'BRAKE' terminal is properly connected to the brake control's blue wire using a 10/12-gauge butt connector.
The trailer may be miswired, the wiring may be shorted, or a bulb may be burnt out. Check all bulbs for proper function. Check for possible shorts in the wiring, particularly the red brake signal wire and blue output wire. Inspect connections for proper fit and blockages.
This indicates a short to the trailer brakes in the wiring or brake assembly. Stop immediately and check for shorts in the wiring and in each electric brake. Do not operate the trailer until the short is located and corrected. Inspect all connections and wiring for damage, pinching, or contact with metal surfaces.
An electrical connection may have failed. Stop and check the trailer connector for proper fit and blockages. Ensure the connector is fully seated and that no debris or corrosion is preventing a good connection. Clean and reseat the connector if necessary.
This indicates a loss of trailer connection, unplugged connector, or bad wiring. Stop and check the trailer connector to ensure it is properly plugged in. Inspect the wiring for damage, pinching, or corrosion. Repair or replace damaged wiring as needed.
The 51126 fits tow vehicles with a factory brake control plug or compatible with CURT quick plug harnesses. Check your vehicle owner's manual for plug availability. If your vehicle lacks a factory plug, use CURT universal kit #51500. Consult the CURT catalog for specific vehicle applications.
You need a CURT custom vehicle harness (check CURT catalog), CURT quick plug with pigtails (#51515 or #51516), or universal kit #51500 if your vehicle lacks a factory brake control plug. A drill, 1/8" bit, Phillips screwdriver, and pry tool are required.
Use minimum 10-gauge stranded wire for positive (black) and ground (white) connections to the battery. The blue trailer brake wire must be 10-gauge. All connections to the brake control use 10/12-gauge butt connectors. Mount the 30-amp auto-reset circuit breaker as close to the battery as possible.
Drilling is optional. If you choose screw installation in addition to the adhesive pad, use a 1/8" drill bit to mark mounting locations. Adhesive-only mounting does not require drilling.
Yes. Disconnect the negative battery terminal before beginning installation to prevent electrical damage and ensure safe wiring.
Positive and ground wires must connect directly to the battery using minimum 10-gauge stranded wire. Connecting to existing wiring or alternate ground may damage vehicle circuits, cause brake failure, loss of trailer brakes, or vehicle fire. Do not mount near CB radios or RF transmitters.
Perform a bench test using a 12V battery and 1156 bulb to verify the display powers on and manual control activates the bulb. Then conduct a test drive on a dry, level surface at approximately 25 mph, adjusting gain and load until stops are firm without trailer tire lock-up.
Yes. Adjust gain and load settings anytime trailer load, weather, or driving conditions change. This ensures smooth, firm stops without trailer tire lock-up.
Cause: No power to controller, no ground, reversed black and white wires, or blown circuit breaker. Solution: Check and repair all connections per the 'Wiring' section. Verify negative battery terminal is connected, positive and ground wires connect directly to battery with minimum 10-gauge stranded wire, and the 30-amp circuit breaker is functioning.
Cause: Red wire connected to wrong side of stoplight switch or incorrect wire. Solution: Check and repair brake control wiring per the 'Wiring' section. Red wire must connect to correct stoplight switch terminal to signal brake application.
Cause: Tow vehicle system voltage is low. Solution: Check tow vehicle battery and charging system. The brake controller is not receiving enough voltage to provide the trailer with needed voltage at current settings. Service may be required to restore proper charging voltage.
Cause: Red wire connected to ground side of stoplight switch or shorted to ground. Solution: Check brake control wiring and repair connection. May require change to switch setting per the 'Manual Control' section.
Cause: Short in blue wire output circuit or trailer plug. Solution: Locate and correct the short. Inspect blue wire for damage, pinching, or metal contact. Check trailer plug connections for proper fit and blockages.
Cause: Inadequate battery or ground wiring to brake controller. Solution: Check brake controller wiring, particularly black (battery positive) and white (ground) wires. Ensure they connect directly to battery with minimum 10-gauge stranded wire and all connections are secure.
Cause: No connection between brake controller and trailer brakes in blue wire circuit. Solution: Confirm trailer connection is properly made and connector terminal positions are correct. Check trailer brake wiring. Verify blue wire from tow vehicle trailer plug 'BRAKE' terminal connects to brake control blue wire with 10/12-gauge butt connector.
Cause: Miswired trailer, shorted wiring, or burnt-out bulb. Solution: Check all bulbs for proper function. Check for shorts in wiring, particularly red brake signal and blue output wires. Inspect connections for proper fit and blockages.
Cause: Short to trailer brakes in wiring or brake assembly. Solution: Stop immediately and check for shorts in wiring and each electric brake. Do not operate trailer until short is located and corrected. Inspect all connections and wiring for damage, pinching, or metal contact.
Cause: Electrical connection failed. Solution: Stop and check trailer connector for proper fit and blockages. Ensure connector is fully seated. Clean and reseat connector if necessary to restore good connection.
Cause: Loss of trailer connection, unplugged connector, or bad wiring. Solution: Stop and check trailer connector is properly plugged in. Inspect wiring for damage, pinching, or corrosion. Repair or replace damaged wiring as needed.
No reviews have been added for this product.