2014-2018 Mazda 3 Hatchback Tekonsha Custom 7-Way + Brake Controller Install KitTekonsha$221.67Out of Stock
View productAsk a Question About This Product
Our in-house experts typically reply within one business day.
Our in-house experts typically reply within one business day.
Tekonsha
Verify Fitment
Select your vehicle to confirm this part fits.
2014 - 2018 Mazda 3
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!
Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
Experts available to answer your questions
Call 888-634-94941 Year
1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2014 - 2018 | Mazda 3 | — |
The 2014-2018 Mazda 3 Sedan Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW28814) fits the following vehicles: 2014-2018 Mazda 3. Always verify your specific year, make, and model before ordering.
The 2014-2018 Mazda 3 Sedan Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW28814) fits 2014-2018 Mazda 3 models. The 2018 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 2014-2018 Mazda 3 Sedan Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW28814) is designed to fit the 2014-2018 Mazda 3.
The 2014-2018 Mazda 3 Sedan Tekonsha Custom 7-Way + Brake Controller Install Kit (Part #TBCW28814) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The T-Connector is a trailer wiring adapter that allows you to connect a trailer to your vehicle's electrical system. It taps into your vehicle's existing taillight wiring to provide power for trailer lights. The product includes a black box connector, wiring harnesses with colour-coded wires (red, yellow, green, black, and white), a fuse holder with a 10 amp fuse, butt connectors, an eyelet, a screw, foam-padded tape, double-sided tape, and cable ties.
The T-Connector 18405-037 is designed for Mazda 6 Sedan and Coupe, Toyota Camry, Mazda CX-7, and Toyota FJ Cruiser. Each vehicle has specific installation instructions. If your vehicle is not listed, this product will not fit.
Yes. The Toyota FJ Cruiser has significantly different installation instructions that begin on page 4 of the manual. The FJ Cruiser installation involves removing the jack storage compartment door, threshold plate, trim panels, and access panels. If your vehicle is equipped with an optional subwoofer unit on the passenger side, additional removal steps are required. The wiring connection points and routing are also different from the other supported vehicles.
You will need: a drill with a 3/32" drill bit, a Phillips head screwdriver, a 10mm socket and ratchet or 10mm wrench, wire crimpers, wire cutters, and a trim panel remover tool. These tools are required for the standard installation on Mazda 6, Toyota Camry, and Mazda CX-7. The Toyota FJ Cruiser installation requires the same tools.
Yes. You must disconnect the vehicle's negative (-) battery cable before connecting the fuse holder to the positive battery cable. This is done in step 7 of the installation. After all wiring connections are complete, you reconnect the negative battery cable in step 8 and install the 10 amp fuse.
Drilling is required only for the grounding connection (step 5). You must drill a 3/32" hole to secure the white ground wire using the supplied eyelet and screw. However, if your vehicle has an existing ground stud, you can use that instead by loosening the bolt, placing the screw eyelet on the stud, and re-tightening the bolt. Before drilling, you must verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces.
Yes, depending on your vehicle. For Toyota Camry and Mazda CX-7, you must carefully slit a rubber grommet to route the black 12 gauge wire out underneath the vehicle. For Mazda 6 Sedan and Coupe, the wire is routed through the taillight socket opening instead. For Toyota FJ Cruiser, you must cut a hole in the rubber grommet located near the wheel well to route the black wire through.
The T-Connector uses colour-coded wires for different functions: Red wire connects to the driver's side taillight for stop/turn signals; Yellow wire connects to the driver's side taillight for additional stop/turn signals; Green wire connects to the passenger's side taillight for stop/turn signals; Black wire connects to the vehicle's positive battery through a 10 amp fuse for power; White wire is the ground connection to the vehicle's chassis or frame.
The 10 amp fuse protects the circuit from overload. It is installed in the yellow fuse holder provided with the T-Connector. The fuse holder is connected between the black 12 gauge wire (which runs from the vehicle's positive battery terminal) and the black wire from the T-Connector black box. The fuse must be installed in step 8 after all other connections are complete.
Approximately 2 feet (0.60 meters) of black 12 gauge wire is routed into the trunk area. The remaining wire is routed through the opening in the taillight socket and behind the bumper (for Mazda 6), or out underneath the vehicle (for Toyota Camry and Mazda CX-7), or along the frame rail and through a grommet near the wheel well (for Toyota FJ Cruiser).
The T-Connector has the following maximum load limits: Max. stop/turn light: 1 per side (2.1 amps); Max. tail lights: (4.2 amps). Do not exceed the lower of your towing manufacturer's rating or these limits. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and instruction sheet for additional information about your specific towing capacity.
After installation is complete, test and verify the installation with a test light or by connecting an actual trailer. All connections must be complete for the T-Connector to function properly. The manual emphasizes that testing is essential before using the T-Connector with a trailer.
After installation, verify that: all wiring connectors are fully inserted with locking tabs in place; the taillight housing is properly seated on its alignment tab (Mazda 6); the black wire is positioned between the taillight housing gasket and foam-padded tape (Mazda 6); all cable ties are secure and wires are protected from pinching or cutting; the T-Connector black box is securely mounted with double-sided tape; the 10 amp fuse is installed in the fuse holder; the negative battery cable is reconnected; and the installation functions properly with a test light or trailer.
The T-Connector black box is mounted on the driver's side on the floor of the rear cargo area. The area must be cleaned with a mixture of rubbing alcohol and water before mounting. The black box is secured using the double-sided tape provided with the T-Connector. After mounting, the trunk threshold and felt trunk liner are replaced.
The black 12 gauge wire must be routed carefully from the vehicle's positive battery terminal to the T-Connector black box. You must avoid hot pipes, heat shields, the fuel tank, and any other points that may pinch or break the wire. For Mazda 6, Toyota Camry, and Mazda CX-7, the wire is routed underneath the bumper and into the engine compartment. For Toyota FJ Cruiser, the wire is routed from the front of the vehicle along the frame rail rearward to the rear driver's side, then through a rubber grommet near the wheel well.
No. Only the Mazda 6 Sedan and Coupe require removal of the driver's side taillight housing. For Toyota Camry and Mazda CX-7, the taillight housing is not removed; instead, you access the wiring through the trunk area and route the black wire through a rubber grommet. For Toyota FJ Cruiser, the taillight connectors are accessed by removing interior trim panels and access panels, but the taillight housing itself is not removed.
The foam-padded tape is applied to the driver's side taillight socket area (Mazda 6 only) to cover any sharp edges on the sheet metal. The black 12 gauge wire is positioned between the taillight housing gasket and the foam-padded tape to protect the wire from being pinched or damaged. The area must be cleaned with a mixture of rubbing alcohol and water before applying the tape.
The yellow butt connector is used to join two wires together. In the T-Connector installation, it is used in two places: (1) to connect the black 12 gauge wire and the red wire from the T-Connector black box (step 4), and (2) to connect the fuse holder to the black 12 gauge wire from the battery (step 7). The yellow butt connector is supplied with the T-Connector kit.
The T-Connector has separate harnesses with colour-coded wires that plug into the vehicle's existing taillight connectors. On the driver's side, attach the T-Connector harnesses containing the red and yellow wires to the connection points on the back of the driver's side taillight housing. On the passenger's side, attach the T-Connector harness containing the green wire to the connection points on the back of the passenger's side taillight housing. Ensure that all connectors are fully inserted with locking tabs in place. For Toyota FJ Cruiser, the connections are made to the vehicle's 3-pin and 2-pin rear tail lamp connectors.
The 4-flat connector should be stored in the rear cargo area (trunk) when not in use. This keeps it protected and readily available when you need to connect a trailer.
The cable ties are used to secure the remainder of the T-Connector harness to prevent damage or rattling. They must be applied carefully to avoid any areas that would cut or pinch the wire. Proper cable tie placement protects the wiring from being damaged during vehicle operation.
If your Toyota FJ Cruiser is equipped with an optional subwoofer unit on the passenger side, you must remove it before installing the T-Connector. The subwoofer removal involves: removing the access panel below the subwoofer; removing the front trim/grill assembly (8 clips); removing four 10mm bolts (an extension is needed for the two upper bolts); disconnecting the wiring harness; and carefully removing the subwoofer unit. After the T-Connector installation is complete, you must reinstall the subwoofer unit and ensure its connection plug is fully inserted.
For Toyota FJ Cruiser: (1) Locate the trailer wiring harness on the driver's side and route the red and yellow wire harnesses behind the trim panel to the access panel location; (2) Locate the vehicle's 3-pin rear tail lamp connector, separate it, and plug the red wire harness between the separated halves; (3) Locate the vehicle's 2-pin rear tail lamp connector, separate it, and plug the yellow wire harness between the separated halves; (4) Route the green wire harness to the passenger's side by routing it out of the driver's side trim panel, along the rear threshold area, behind the passenger's side trim panel, to the access panel location; (5) Repeat the 2-pin connector connection using the green wire harness on the passenger's side.
On the Toyota FJ Cruiser, the white ground wire with the ring terminal is connected to the bolt on the left side of the jack inside the jack storage compartment. You remove the bolt using a 10mm socket, place the ring terminal on the bolt, and re-tighten the bolt to secure the ground connection.
Yes. Disconnect the vehicle's negative (-) battery cable before connecting the fuse holder to the positive battery terminal. Reconnect it after all wiring is complete and the 10 amp fuse is installed.
The T-Connector uses a 10 amp fuse installed in the yellow fuse holder provided. This fuse protects the circuit from overload. Do not exceed the maximum load limits: 1 stop/turn light per side (2.1 amps) or max. tail lights (4.2 amps).
Max. stop/turn light: 1 per side (2.1 amps); Max. tail lights: (4.2 amps). Do not exceed the lower of your towing manufacturer's rating or these limits. Overloading can cause fires.
Verify that all connections are complete and fully inserted. Check that all T-Connector harnesses are properly connected to the vehicle's taillight connectors with locking tabs in place. Verify that the black 12 gauge wire is properly connected to the red wire from the T-Connector black box using the yellow butt connector. Verify that the white ground wire is properly secured to a ground point. Verify that the fuse holder is properly connected to the vehicle's positive battery terminal and that the 10 amp fuse is installed. Verify that the negative battery cable is reconnected. Test the installation with a test light or trailer to confirm proper operation.
Ensure that the black 12 gauge wire is positioned correctly between the taillight housing gasket and the foam-padded tape. Verify that the foam-padded tape is properly applied to the taillight socket area and covers any sharp sheet metal edges. Carefully replace the taillight housing, ensuring it is properly seated on its alignment tab. Replace the two 10mm nuts and tighten them securely. The taillight housing should sit flush against the vehicle body with no gaps.
For Toyota FJ Cruiser, the tail lamp plug area is very small and may be difficult to reach with your hands. Long nose pliers may be used to assist in the removal and connection of the plugs. Ensure that you are inserting the connectors straight and fully, with locking tabs properly engaged. Do not force the connectors, as this may damage the locking tabs.
The BRAKE mate is a trailer brake control system that allows you to control trailer brakes from your vehicle. It connects to your vehicle's electrical system and includes a brake control unit that mounts under the dash, circuit breakers for power management, and a prewired connector that attaches to your trailer.
The manual does not specify which vehicle makes, models, or years are compatible with the BRAKE mate. Contact Cequent Towing Products technical service at (888) 521-0510 or consult a fitment database to confirm compatibility with your specific vehicle.
Yes. Step 4 of the installation instructions requires connecting the 4-pole flat connector to the vehicle's connector, which means your vehicle must already have a 4-pole flat connector. If your vehicle does not have one, the BRAKE mate cannot be installed using these instructions.
The kit includes: 1 prewired connector, 1 heavy duty flasher, 1 20 amp circuit breaker, 1 40 amp circuit breaker, 5 #10 G-ring connectors, 2 3/8" G-ring connectors, 5 Scotch locks, 8 self-tapping screws, and 6 wire tie straps.
The manual does not specify required tools. However, based on the installation steps, you will likely need a drill (to create a firewall hole if one does not exist), wire strippers, a screwdriver (for self-tapping screws), and possibly a crimper or pliers for ring connectors. Contact technical service at (888) 521-0510 for a complete tool list.
The manual does not specify whether the battery must be disconnected before installation. Contact Cequent Towing Products technical service at (888) 521-0510 for safety guidance before beginning work.
Mount the bracket for the round connector on the bumper if that is where you intend to install it. Some hitches have built-in brackets, so check your hitch first before mounting a separate bracket.
Mount the brake control unit under the dash onto something firm. The unit must be securely fastened to a solid surface.
Mount the 2 circuit breakers (20 amp and 40 amp) end to end on the firewall within reach of the BLUE/BLACK cable. Secure them with the self-tapping screws supplied in the kit.
You may need to drill a hole through the firewall to run the BLUE/BLACK 2-strand wire from the engine bay into the cab. Look for an existing spot first; if none is available, drill a hole and seal it with a rubber grommet or silicone to prevent water and debris from entering the cab.
Some hitch brackets may need to be cut to allow the various connectors to pass through. Check your specific hitch bracket during installation; if it blocks connector passage, you will need to cut it.
Yes. In step 9, you must cut the black wire to create two open ends. These ends are then fitted with ring connectors and attached to the 40 amp and 20 amp circuit breakers respectively.
WHITE = ground wire; BLUE/BLACK = 2-strand power and trailer brake wire (runs from rear connector to front of vehicle and through firewall); RED = power wire from brake control unit; BLUE = trailer brake wire from brake control unit; GREEN = wire from brake control unit to brake switch.
Connect the WHITE ground wire to the frame of the vehicle. This provides the ground connection for the system.
Run the BLUE/BLACK 2-strand wire along the frame rail to the front of the vehicle, avoiding the exhaust, axles, and brake cables. Secure it with the plastic tie straps supplied. Then run it up the firewall, avoiding the steering mechanism, and secure it with ties.
Split the BLUE/BLACK 2-strand wire down the middle. Connect the RED (power) wire of the brake control unit to the BLACK wire using a Scotch lock. Connect the BLUE (trailer brake) wire of the brake control unit to the BLUE wire using a Scotch lock. Connect the WHITE wire of the brake control unit to the ground on the vehicle body. Connect the GREEN wire of the brake control unit to the inactive side of the brake switch.
Run a heavy gauge wire from the battery or equivalent power source to the battery side of either circuit breaker. Attach a #10 G-ring connector to one end of the wire. Then split a wire off this main wire to the 20 amp breaker using a Scotch lock and attach a #10 G-ring connector to the end of this wire. Alternatively, you can run a jumper between the two breakers.
The circuit breakers protect the electrical system. The 40 amp breaker is connected to the auxiliary side of the wire going to the rear connector. The 20 amp breaker is connected to the auxiliary side of the wire going through the firewall to the brake control unit.
The heavy duty flasher is a replacement turn signal flasher. If your turn signals blink too fast after installation, replace your vehicle's original turn signal flasher with the one supplied in the kit.
After attaching the round connector with self-tapping screws, test the connector for: running lights, brake lights, turn signals, and hot wire (power). Note that the brake control output cannot be tested unless a trailer is connected to the connector.
If the turn signals are blinking too fast after installation, replace the turn signal flasher with the heavy duty flasher supplied in the BRAKE mate kit.
After drilling a hole through the firewall to run the BLUE/BLACK wire into the cab, seal the hole with a rubber grommet or silicone to prevent water and debris from entering the vehicle.
When running the BLUE/BLACK 2-strand wire along the frame rail and up the firewall, avoid the exhaust, axles, brake cables, and steering mechanism. These components can damage the wire or be damaged by it. Secure the wire with the supplied plastic tie straps.
Your vehicle must have a 4-pole flat connector. Contact Cequent Towing Products at (888) 521-0510 or check a fitment database to confirm compatibility with your specific make, model, and year.
The kit includes a prewired connector, brake control unit, 20 amp and 40 amp circuit breakers, 5 #10 G-ring connectors, 2 3/8" G-ring connectors, 5 Scotch locks, 8 self-tapping screws, 6 wire tie straps, and a heavy duty flasher.
You may need to drill a hole through the firewall to run the brake wire into the cab if an existing hole is not available. The hole must be sealed with a rubber grommet or silicone.
Connect WHITE (ground) to frame, RED (power) to BLACK wire, BLUE (trailer brake) to BLUE wire, GREEN to brake switch, and run BLUE/BLACK from rear connector through firewall to brake control unit.
Test for running lights, brake lights, turn signals, and hot wire (power). Brake control output cannot be tested without a trailer connected. If turn signals blink too fast, replace the flasher with the one supplied.
Avoid routing the BLUE/BLACK wire near the exhaust, axles, brake cables, or steering mechanism. Secure all wires with the supplied plastic tie straps.
Free Shipping
Ships free on all orders
Authorized Dealer
FREE ShippingFREE SHIPPING
Estimated delivery Thu, Aug 20 - Sun, Aug 23
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
Total for 1 item:
$18.99
No reviews have been added for this product.