[t-tung]

I've been on the phone off and on with PSI trying to troubleshoot it. If I disconnected the yellow wire from the brake switch it would surely power-brake because it won't be getting a signal at all. Their instructions specifically say it has to get 12v power when breaks are applied though. Says harm to your transmission can come from not being hooked up. Then on their instructions for the brakelight switch it says the yellow wire is for Gen IV only so idkwtf to do.