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- #41
Love the thread. Thanks for posting.
I have a question about the wiring harness on the "backup switch". How to tell which wire goes to which terminal? I recently dropped my tranny and both wires came off when I twisted the sensor out. Neither wire is marked in any discernable way, that I could tell. Should I just touch the wires to the terminal points with it in reverse, and have someone watch for the backup lights? That seems kinda amateur to me, but I cant figure another way...
Like it was just said, a switch just has continuity when closed and none when open. While the backup switch is different here because it's 'upstream' of the resistance (or load or bulbs), which pole is hot isn't material here. In a house light switch, yes, you would put power to one pole over another, but this is just 12 volts and nothing in this switch internally grounds.