Wiring Utility Bed Combined Brake/Turn Signals to 2014 Toyota Tundra w/Separate Brake/Turn Signals

Question:

i own a 2014 toyota tundra and bought a truck bed with tool boxes for it, the Toyota wiring has brakes/tail lights separate from the turn signal. so as of now i have either brake lights or turn signals, will this aid me to be able to have both functions

asked by: Scott S

Expert Reply:

So if I understand correctly, you have replaced the bed on your 2014 Toyota Tundra with a utility type of bed. And this new bed has different wiring requirements than the factory Toyota lights. Is that correct?

So, since the Toyota wiring has separate circuits for turn signals and brake lights, I assume that the new bed has combined lighting (brake lights and turn signals on the same circuit). To combine the separate Toyota circuits you will need a converter such as # 119178.

Yellow input is left turn only, green input is right turn only, and red is brake lights. Brown is running lights and white is ground. On the output side you would cut off the 4-Way. The yellow wire would now be left turn and brake lights, green is right turn and brake lights, brown is running lights, and white is ground.

If it was the other way around and the truck came with combined circuits and you needed to separate them out you would use converter # 118158. The yellow input wire would be for left turn and brake lights, green for right turn and brake lights. The running light circuit would bypass the converter. On the output side you would have yellow for left turn, green for right turn, and red for brake lights. It doesn't sound like this is the converter you need but rather # 119178 in the above paragraphs.

expert reply by: Michael H