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Utah-Clay

Reverse light switch

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I want to hook my backup display and camera to come on when I put the beast in reverse. I have the camera tapped into the reverse light at the rear but the display is presently in the cigarette lighter. I would like to tap into the reverse circuit in the cab or on the transmission but I cant find where the switch is located. I looked at the service manual but I couldn't find any indication of the reverse switch. Any ideas on where I can tap into?

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1 hour ago, Utah-Clay said:

I want to hook my backup display and camera to come on when I put the beast in reverse. I have the camera tapped into the reverse light at the rear but the display is presently in the cigarette lighter. I would like to tap into the reverse circuit in the cab or on the transmission but I cant find where the switch is located. I looked at the service manual but I couldn't find any indication of the reverse switch. Any ideas on where I can tap into?

What year is your rig and what type of transmission?

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Duh... 1992 3.0 V6, Auto trans. I think that is the A340?

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Yes would be helpful. I set up a gropro camera but as ran while I was driving I found myself looking at it too much and almost went of the road. Had to disconnect it but if I could wire into the reverse light switch then I could hook it up again.

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If someone has a wiring diagram including this circuit that would be very helpfull. I could not find this circuit in the diagrams in the factory service manual.

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If it's an automatic it on the switch attached to the trans.

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