4l80 wiring question
 

I am working on modifying the stock wire harness and chasing wires down per LT1swap's guide. I got all the PCM pins labeled but all the connections that are cut out of the C2 block (all but pink) were chased out and removed. I chased this small bundle to the transmission selector and it seems like too many to remove. did I mess up?

Re: 4l80 wiring question
 

After posting on your FB thread I looked it up to reaffirm. It's just the black/white wire that should remain on the top plug.

Re: 4l80 wiring question
 

I don't have a PRNDL/range selector at all. I have none of that.

Re: 4l80 wiring question
 

I'm not sure how different the 4l80e is from the 4l60e but for the 4l60e you ONLY need the black/white wire on the larger plug and keep all 4 on the smaller plug. Based on your picture, you are very close and accurate, looks like you only have (1) extra pink wire that is not necessary.

Re: 4l80 wiring question
 

What does the black white wire do for the pcm ? Would these 2 wires be all that's needed to provide the pcm info when the vehicle is being shifted into gear ? I just bought a new harness and it does not have the range selector switch plug. I would like to add it in

Re: 4l80 wiring question
 

http://lt1swap.com/pictures/99_02_sc...aul%202000.gif

The black/white wire on the large plug should route to ground. The four wires on the smaller plug route to the PCM and provide PRND A, B, C, and P signals.