CCMS21

Is the Green/white wire at the head unit plug used for speed sense?

saloonwarrior

Whelp......some would say yes, and I don't disagree with them, but it didn't work for me. I had to go with the orange wire next to it. I had the Bose stereo in my 98 and tried the green/white, but it wouldn't show pulses on the (Pioneer Avic D3 gauge display.)

minitech

Did the orange one show pulses?

CCMS21

All the data I have seen says you need to go to the cluster or under the hood. From my past experience on GM's, it is at the head unit plug if the radio is bose.

pentavolvo

i have all the diagrams at school with color codes and pinouts but no where does it say vss wire, there are 2 serial data related wires and i dont remeber colors off hand. im thinking its one of those 2 wires

RoadRebel

There is a small handful or wires wrapped just left of the steering column looping up towards the cluster. You will find Green with white trace which is the signal for the speedo. You can also get the tach pulse (white wire) and just about any other signal sent to the cluster.

Phil

CCMS21

Thanks, I will do that rather than testing the HU wires for VSS

CCMS21

Worked like a charm, I did not even need to take out the cluster. I found the VSS wire from underneath. Thanks for all your help.

saloonwarrior

Yes, it showed pulses (orange wire). I havea question though. When the car is sitting still, and the display is on the gauges, does anyone else's speedo jump back and forth off of zero (the center guage)? I tried the green/white wire and could get any pulses......why???