Rear camera installation

[jakewalter]

I am in the process of installing a rear camera for my truck camper.

I am working on my 85 K20 with an automatic transmission.

I need to tap into the backup lights.

Rather than run a wire back to the taillight I was wondering if I could tap into the wiring underneath the dash.

If anyone knows where the wires are I would appreciate the help.

Thanks so much,
Jake

 

[YakkoWarner]

I am in the process of installing a rear camera for my truck camper.

I am working on my 85 K20 with an automatic transmission.

I need to tap into the backup lights.

Rather than run a wire back to the taillight I was wondering if I could tap into the wiring underneath the dash.

If anyone knows where the wires are I would appreciate the help.

Thanks so much,
Jake

I am not sure that wiring will be under the dash since nothing in the cab actually depends on it - my understanding is there is constant +12 going to the switch on the transmission (which closes when you move the selector to "R") and then from there it goes right to the reversing lamps. The closest point to grab that signal might be at the transmission itself.

 

[Rickf]

My rear camera needed one power supply when the vehicle is on and one signal (reverse light) to turn it on. Is your setup similar?