How to Find the Brake Wire on a 2001 Toyota Tacoma for Brake Controller Install

Updated 07/22/2020 | Published 07/26/2015

Question:

What is the wire color for cold side of brake light switch on a 2001 toyota tacoma. It is very difficult to get up under the dash to use the wire tester included with the kit. Any ideas of what the wire color is i should be using?

asked by: Chris G

Expert Reply:

When we installed a brake controller in a very similar Toyota Tacoma as your (see attached install video), we found that the correct wire to use for the stoplight switch was dark green wire with a white stripe. You should still test this wire for voltage with the circuit tester to verify it is the correct one. But this would be an excellent starting point.

expert reply by: Jameson C

Donniemac

7/14/2020

My brake light seems to have one green and one green with red stripe on driver side brake on 2001 tacoma Most of the info calls for green with white stripe. Should I just assume any stripe is hot and solid green tail light?

Chris R.

7/18/2020

I wouldn't assume anything. I highly recommend that you actually test those wires with a circuit tester to verify which one only gets power with the brake pedal depressed (and no power with any other function).

Donniemac

7/18/2020

@ChrisR THANKS. I’m a pretty poor mechanic on things with which I have no experience