Installation of Roadmaster 88400 and Locating Cold Side of Brake Switch on 2021 Jeep Wrangler

Question:

Roadmaster Brake-Lite Relay Kit for Towed Vehicles Item # RM-88400 I want to install the above kit on my 2021 Jeep wrangler. However, i have problem identifying the cold side of the brake light switch wire. I can see the brake light switch with number 1~3 labeled and the wires are all green with different color strip. I tried using voltage tester but could confirm the right wire. Please kindly suggest solution. Thank you

asked by: Catherine C

Expert Reply:

I've attached an installation video of the Roadmaster Brake Light Relay Kit # RM-88400 for you to have a look at on a similar Jeep Wrangler, where it details the process and where you can find the cold side of the brake light switch to tap into. You will need to remove the panel under the steering wheel to gain access to this.

expert reply by: Erik B