4l60e range switch/back-up lamp problem
 

I'm stumped.

I have no 12v power coming from pin F on the 7-way plug.
I used the lt1swap wiring diagram, which keeps only the ground from the 7 pin plug. I thought that switch got power elsewhere and I could just run from pin F to my back-up lamps.

Can I test continuity from another pin to pin F when in reverse to check for a bad switch?

Doug

Re: 4l60e range switch/back-up lamp problem
 

There should be a pink wire in location C that you have to hook ignition power to. What year engine are you working with? This would be for 99-03 I believe.

Re: 4l60e range switch/back-up lamp problem
 

That makes sense now that I look at the diagram. It's an '02 engine, trans and harness.
I'll run a lead down and see what I get.

Thanks!

Re: 4l60e range switch/back-up lamp problem
 

I had to draw out the switch before it made any sense to me, maybe it will help you.

Re: 4l60e range switch/back-up lamp problem
 

RAD! thanks man.