Our in-house experts typically reply within one business day.
Tekonsha
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
Complete kit bundle containing all necessary components for your project. Professional-grade components designed for reliable performance and long-lasting durability.
Does your trailer have multiple tail lights or does the tail lights seem dim to you? Then it is possible you need a Modulite from Tekonsha. The Tekonsha Modulite product line has power modules designed to virtually eliminates additional electrical draw on the vehicle's tail light circuits. They help to ensures maximum trailer light brightness for your trailer tail lights. It powers the trailer's stop, turn, tail and running lights without overloading your vehicle electrical systems.
*Will not work with all 2016 2021 Mercedes GLC300 models
| BRAND: | TEKONSHA |
| PART NUMBER: | 119191 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.45 LBS |
| UNIVERSAL OR SPECIFIC FIT: | UNIVERSAL |
| TERMINAL QUANTITY: | 4 |
| WIRING HARNESS INCLUDED: | YES |
| CONVERTER TYPE: | Powered |
| CONNECTOR SHAPE: | RECTANGLE |
| ILLUMINATED: | NO |
Keywords: TK119191-5PK bundle kit, complete kit, professional components, industrial kit, TK119191, Tekonsha
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
The MODULITE® HD PLUS is a towing module that converts your vehicle's lighting signals to control a trailer's 4-flat connector. It reads your vehicle's turn, brake, and tail light signals and outputs them to the trailer connector so the trailer lights function correctly when you tow.
The module works with four types of vehicle wiring systems: Type A (2-wire: turn and brake combined on one wire, tail on separate wire), Type B (3-wire: turn, brake, and tail on separate wires), Type BT (brake/tail multiplexed: brake and tail combined, turn separate), and Type BTT (brake/tail/turn multiplexed: all functions combined on one wire). However, the module may not work with some BTT wiring systems; in those cases you may need to route the tail wire to the rear license plate illumination circuit and/or brake to the center high stop light.
Yes. The wiring kit is sold separately. The manual notes that the required wiring kit may be sold separately, and specifies that wire kits 118150 or 118151 are available. The module itself does not include the power wire needed to connect to the vehicle's battery.
Required tools are: Phillips head #2 screwdriver, wire cutters, wire strippers/wire crimpers, tester or volt meter, socket and ratchet set, drill with 3/32" drill bit, and double-sided tape (included). You will also need appropriate gauge wire splices for splicing the input wires to the vehicle.
Included hardware: 8 cable ties (8.5"), 1 15-amp fuse, 2 ring terminals, 1 fuse holder, 2 yellow butt connectors, 1 self-tapping screw, 4 blue taps, 1 spade terminal, and 1 double-sided tape. The power wire is not included and must be purchased separately (wire kits 118150 or 118151).
Yes. You must disconnect and isolate the vehicle's negative battery terminal before beginning installation. Follow all warnings and cautions printed on the tow vehicle's battery.
Determine a suitable mounting location for the module and secure it using the double-sided tape provided. The module must be mounted so that the epoxy side is pointed toward the ground to prevent water buildup.
Drilling may be required. You need to locate a suitable grounding point near the module, such as an existing ground stud. If no existing ground point is available, you must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed. Before drilling, verify what is behind any surface to avoid damage to the vehicle or personal injury, and do not drill into any exposed surfaces.
The 4-flat connector outputs are: white wire (ground), brown wire (tail light), yellow wire (left turn/brake), and green wire (right turn/brake).
Use 12 gauge or larger gauge wire to connect the module's black wire to the power source using a butt connector.
The blue tap connectors provided are for 16-18 gauge wire only. When splicing input wires to the vehicle, use appropriate gauge wire splices for the wire size you are working with.
The module uses a 15-amp fuse. The fuse holder and fuse are included. Do not insert the fuse until after all wiring connections are complete and the module is ready for testing.
Yes. Unused input wires may be secured with a spade terminal and attached to ground.
Route the power wire carefully to the vehicle's positive side of the battery. Avoid any hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire. Connect using the fuse holder, butt connector, and ring terminal provided. The module must be connected to a constant power source and not to an alternative power source that is interrupted when the vehicle is off.
Do not exceed the lower of the towing manufacturer rating or: maximum 2 stop/turn lights per side at 4.2 amps total, and maximum tail lights at 7.5 amps. Overloading the circuit can cause fires. Consult the vehicle's owner's manual and instruction sheet for additional information.
Wear safety glasses and use all safety precautions during installation. When using a volt meter or circuit tester, carefully probe one wire at a time—do not probe across two wires or across vehicle structure. Before drilling, verify what is behind any surface to avoid damage to the vehicle and personal injury. Do not drill into exposed surfaces. Read and follow all vehicle warnings and installation instructions before beginning.
After installation is complete, test and verify the installation with a test light or trailer. Test each function independently and in combination to ensure all lights are working correctly.
Secure the harness with the cable ties provided to prevent damage or rattling, being careful to avoid any areas that would pinch, cut, or melt the wire. Reconnect the vehicle's negative battery cable. Insert the 15-amp fuse into the fuse holder and close the cap. Test and verify the installation with a test light or trailer, testing each function independently and in combination.
The module works with 2-wire, 3-wire, brake/tail multiplexed, and brake/tail/turn multiplexed wiring systems. However, it may not work with some BTT systems. Determine your vehicle's wiring type and consult the TOW VEHICLE INPUTS – DETERMINATION table in the manual to confirm compatibility.
Yes, the wiring kit (118150 or 118151) is sold separately and is required for installation.
Yes, you must disconnect and isolate the vehicle's negative battery terminal before beginning installation.
The module uses a 15-amp fuse. Do not insert the fuse until all wiring connections are complete and the module is ready for testing.
Do not exceed: maximum 2 stop/turn lights per side at 4.2 amps total, and maximum tail lights at 7.5 amps. Overloading can cause fires.
Test with a test light or trailer, checking each function (turn, brake, tail) independently and in combination to verify all lights work correctly.
First, ensure the input wires are installed per the Tow Vehicle Inputs – Determination findings. Verify that the blue taps are installed correctly. Using a tester or volt meter, check for voltage on each input wire near the module. Remove the 15-amp fuse for 10 seconds and repeat the test.
Check the chassis ground: ensure the ring terminal is in full contact with bare metal of the vehicle's chassis. Verify the 15-amp fuse is fully inserted into the fuse holder with no breaks. Ensure the fuse holder is connected properly to the positive post of the battery. Verify the module is connected to B+ by using a tester or volt meter to check for voltage on either side of the yellow butt connector near the module. Remove the 15-amp fuse for 10 seconds and repeat the test after each check.
The installation may have activated circuit protection. Remove the 15-amp fuse for 10 seconds and repeat the test. If power is still absent, verify the module is connected to B+ by using a tester or volt meter to check for voltage on either side of the yellow butt connector near the module.
On Sale Today
Original price was $612.50. Current price is $572.45.You save $40.05 (7%)
Free Shipping
Ships free on all orders
Authorized Dealer
FREE ShippingFREE SHIPPING
Estimated delivery Sat, Nov 14 - Tue, Nov 17
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.
