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View Full Version : need help with speedo wiring



VIRGIN MIKE
06-22-2020, 04:15 PM
Trying to tidy up under dash, I eliminated a couple of connectors and did not get the speedometer wiring correct

There rear harness speedo connector is plugged into the (TKO600) trans socket - green and grey wires - I have the green going to the speedometer and the grey getting +12 from the grey turn signal source

Everything else seems to be working OK - lights, hazards, turn signals, dash gauges all work; speedo cycles when ignition turned on but no speed indication.

cnutting
06-22-2020, 05:22 PM
I had issues too, probably self-inflicted. I did a quick pass on diagnosis, then got lazy and sent the gauge to Speedhut for GPS conversion. Kept the original faceplate so nobody knows....

FF33rod
06-22-2020, 05:53 PM
The grey should go to ground not +12V

Steve

VIRGIN MIKE
06-23-2020, 01:49 PM
Thanks Steve, that sounds right, I have never seen so many dedicated ground wires. Be a day or two til I get back to it