Installing Tekonsha Prodigy P2 Brake Controller # 90885 in 2010 Toyota Tundra

Question:

I am installing a brake controller on a 2010 Toyota tundra. It has a factory four falt on the back but it has a quick connect in the cab. Where do I find the wires to hook to the seven way

asked by: Nick C

Expert Reply:

If your 2010 Toyota Tundra does have a brake controller quick-connect port under the dash (not an OBD-II port or other similar-looking connector) you can use quick-connect harness # 3040-P to connect a controller like the Prodigy P2 # 90885. The linked video will help you identify the port. You can make sure you have found a brake controller port by testing the 4 pins (which should look like those on harness # 3040-P); one should have 12V at all times (to power the controller); one should have voltage ONLY when you step on the brake pedal. This pin delivers the brake switch signals to the controller to tell it to generate an output signal.

Next, follow 4-pole wiring at rear of vehicle along the frame to where it connects. Check the harness that the 4-pole plugs into, looking for extra wires. If extra wires are found, have a helper activate the manual brake switch on controller. Use a circuit tester like # PTW2993 on the extra wires looking for voltage that corresponds with the switch being activated. This will be your brake output circuit. If this is the case, you can use # 37185 and tap the blue wire on adapter into the output circuit you found. This will deliver brake signals to your 7-way.

If no active or extra wires are found under the vehicle, sever the blue wire on the wiring adapter # 3040-P and use a butt connector to attach a length of 10-gauge wire leading FROM the controller that is long enough to reach rear of vehicle. Pass this wire through the firewall, engine compartment and under vehicle to the rear, avoiding hot and moving parts. Install # 37185 and attach this wire to the blue lead.