I swapped out the auto tranny in my car for a T-5 not too long ago and I thought it would be cool to get the stock shift light in the lower right corner of the instrument panel to work. I put a bulb in there and it doesn't come on at all. Not during WOT blasts or normal puttering around town. I assume I had to jump some wires somewhere to make it work properly but I left that out. Can some one please point me in the right direction to make this work? Or does the ECM in auto cars not have a function for this at all? I remember reading somewhere in a thread on the boards that the shift light is activated by the ECM under the same conditions that are required for TCC lockup in auto cars. That means I probably had to jump some wires somewhere, right ? Any help is greatly appreciated .

 

You are going to run wires to the bulb, GM didn't put the wires in for auto cars. The wire you want is A7 on the ECM it is Tan/Black. Here's a wiring diagram to help:

[img]ftp://ftp.diy-efi.org/pub/gmecm/manuals/1227165/89-165v8MAF.jpg[/img]

 

Here's one more:

[img]ftp://ftp.diy-efi.org/pub/gmecm/manuals/1227165/86-165v8tpi-5.jpg[/img]

 

So which wires will I need to run to the bulb? I thought the bulb was already wired up since there is a provision for it in the printed wiring behind the instrument cluster. I guess I'll need to run the wires to some other location instead from where the current will flow to the bulb.

 

that light is stupid and annoying... especially at night, you dont need that light to shift your car.. i took my bulb out