Installing ditch lights in 4th gen tacoma using the OEM aux switches

This explains in detail how to wire an accessory to the 4th gen tacoma using the original aux switches that came in the trd off road trim package. It explains what cable colors in the pigtail correspond by amperage.
Pigtail cable labeling:
Black 15 amp
Green 10 amp
White 5 amp
White w/black Ground
Toyota OEM AUX Pigtail part#
PT948-35402

[@seangastelum1134]

Thanks so much! Super helpful ☺️. Quick question, for the relay on/off switch that came with your KC light harness, did you just trim that off since you’re using the OEM switch?

[@grayish_taco]

I simply just cut off the switch. They’re 3 cables going to the toggle switch that came with the lights. Once I cut the switch I wired one lead to the 5amp aux switch for the backlight option. The other lead which is for the actual bright beam I wired to the 10amp aux switch. The ground to ground.

[@JZEFPV]

So how do you choose which switch controls each light? Like you said you have the black 15amp wire on aux 1, but what if I wanted to do the 15amp on aux 3 instead? You still need to connect the 15amp light or accessory to the black wire under the hood or kick panel correct? Is there a way to program which switch controls which circuit if each switch isn’t hardwired to the corresponding amp rated wire like the manual shows?

[@grayish_taco]

You can’t swamp the amps on the inside aux switches. They are already wired for 15,10,5amps. Aux1 will power 15amp, aux2 10amp and aux3 5amp. All 3 switches are loomed together into one harness that contains 4 cables, one lead cable for each switch and one for ground. The harness option with plugs throughout the truck in case your connecting accessories in various places. I think there is 2 in the engine bay, one in the kick panel and one by the rear frame. They pretty much ran the wiring for you.