Custom Brake Controller Wiring Harness for 2019 Toyota Tundra With Factory 7-Way
Updated 12/15/2025 | Published 11/17/2024
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Question:
Hello, I have a 2019 Tundra 4.7 and Im looking for the harness that connects a brake controller to the rear trailer 7 pin connector. I have the seven pin plug connector installed from the factory and the wiring goes up to the the left kick panel but i dont see the large white plug to connect to for the controller. Thanks, Carl Conklin
asked by: Carl C
Expert Reply:
Hi Carl; are you wanting to use the Redarc Tow-Pro Trail? If so, you need the # RED64UR which includes the brake controller and custom wiring harness for your 2019 Tundra. This will plug into the factory port underneath your dash, connecting the brake controller to the brake output circuit running to your 7-way.
If you want a different brake controller or a different brand please let me know and I will see what custom wiring harness options are available. I attached an installation video that shows the location of the factory port below for your reference.
Product Page this Question was Asked From
Redarc Tow-Pro Trail Brake Controller w/ Custom Harness - Dash Knob - Off-Road Mode - Up to 3 Axles
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Plug-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 3 Axles
- Indicator Lights
- Single Trailer Only
- Redarc
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Robin H.
12/15/2025
Hey Carl, how did things go with the Redarc Tow-Pro Trail and harness for your Tundra? Did the factory port under the dash end up being easy to find and connect to? Your update could make it easier for others working on the same setup.