Wiring Disaster and bad pin 31 ECU ground

[BABIS]

Can somebody confirm the wire pair in the photo is the OE wiring pair that would've hooked up to the lamp in the 3-spd shifter?

yes it is!

[spikeygg]

Can somebody confirm the wire pair in the photo is the OE wiring pair that would've hooked up to the lamp in the 3-spd shifter?

From the wiring diagram there's a Light Green/White wire and a ground wire to that lamp, something your 5-spd D doesn't need or have. If the ID is confirmed this is factory wiring, not PO mayhem.

For any new owner dealing with PO hacks order a poster-size color wiring diagram to save yourself headaches and eyestrain. Also useful for troubleshooting at connections.

yes it is!

Thanks guys, just after I posted this I was staring at the schematic and I found the light you're referring to... I'm still in disbelief that this was acceptable wiring practice in the 80s. Thanks for the help.

LightGreen-White_and_Black.gif

[Jonathan]

Thanks guys, just after I posted this I was staring at the schematic and I found the light you're referring to... I'm still in disbelief that this was acceptable wiring practice in the 80s. Thanks for the help.

LightGreen-White_and_Black.gif

Here's a photo of the light bulb from an automatic: http://dmctalk.org/showthread.php?10...l=1#post165448

[Rich]

Thanks guys, just after I posted this I was staring at the schematic and I found the light you're referring to... I'm still in disbelief that this was acceptable wiring practice in the 80s.

Doing it that way simplified production. The factory didn't need to keep track of and buy more than one harness style at a time. Cars are still made this way...sometimes there are seat-motor-control or seat-heat connectors under front seats that are manual-adjust or aren't heated.

The transmission selector lamp wire isn't the only unused circuit in your car. I can think of at least 2 others.

The bottom line: When you find more color-coded wiring it's probably factory, not a PO hack.