Thanks for the info, I'm not sure what you mean by "code", I have not actually cut anything yet. I took the unit out of a used car at that came through the shop at work for a inspecton before it could be sold (no aftermarket parts allowed). I do not have any books or anything to go along with the remote start unit, just the unit itself, 1 remote and the wiring harness, that I took out. Right now all I know is what it says on the back MODEL 420 and it's made by CODE ALARM. Your right about the T-clamps, thats how it was installed before, the really are crap