Originally Posted by rraulston
Well, I got my a$$ kicked today. I bought a prodigy 2 and went to install it. 3 out of the 4 wires on the vehicle brake plug were usable for the 4 wire install. Brake signal, ground and power. The 4th wire on the vehicle plug is always hot on my truck so its not possible to hook up the brake light wire to that plug. No biggy, I will just tap the brake switch on the pedal. There are 3 wires on the brake pedal. one is 12v constant, one is 1-3v and the third has no voltage(pedal depressed or not) I have spent 3 hours probing at least 50 different wires in any plug I could get my hands on and there is no brake wire to tap into. No kidding......wtf.... I now have to resort to rigging a micro switch on the pedal in order to have the proper brake pedal 12v signal.....PITA!!
Something doesn't seem right. I am sure I saw one lead switch to 12 volts on the 4 pin plug on my truck when I push the brake pedal but it didn't seem to correspond to the correct connection on the adapter I bought. I might get some time on Sunday to take a closer look at mine. Are you sure your brake lights are working?