Hey everyone I posted this question as a reply to an older thread but got no response so I will ask the masses in a new thread! the head unit is a Clarion max685bt and I just purchased aTR7 to use as the bypass. I was looking at the instructions and since I am not so electrically inclined i was wondering how you got your head unit connected with the TR7 especially the part about connecting the blue wire for the TR7 to the foot brake input wire from the headunit?? I understand about putting the white wire to the parking brake relay wire but which is the foot brake wire?? also which 12volt source did you run the TR7 to??? Any help would be awesome!!!!!!!!!!!!!!!!!!! Thanks everyone pushing the switch 4 times everytime i turn on the truck is already getting old!