Although i can't give you the info you're asking for(I don't know) what you want to do is the right way to go about it.
Thanks. I'll just use a wire probe, turn on the key, stick it in reverse and see if the proble lights up.baseballfanz said:Yes you can tap into the reverse wire at the tow harness plug. It should be a yellow/red stripe wire (double check to be sure).