wilsonIII

Does anyone have available a simple wiring diagram for the instrument pod on a 1978 928? (I am mostly concerned with the wiring to the the 12 wire connectors)
(In particular the voltmeter and oil pressure gauge are non-functional)

The voltmeter has no response under any conditions and the oil gauge pegs it's self at the high end. (I disconnected the oil sender and then the wiring warning module - still pegs once the ignition goes on)

928nut

Before you go deep into serious troubleshooting, do yourself a favor and get under the pod with a flashlight and verify the connector did not slip off. Happened to me recently on the other side of the pod and happened once again, after I plugged it back in. I'll have to figure out a way to lock these connectors in because they are basically hanging upside-down and with aging, the walls of plastic housing have kind of bowed out, reducing the retention force they once had. If it checks out OK you have a more serious problem but I would start there.

wilsonIII

Thanks for the input; however I did not mention the pod is out of the car now. It is not the contacts, it is in the wiring. Hence, the need for a wiring diagram of the of the three (12 wire) connectors to the instrument pod.

neilh

PM me with your email address and i'll send you the full 78 wiring diagrams as a pdf.

wilsonIII

To NEIH

I hope I was able to PM you.

neilh

Diagrams emailed to you

wilsonIII

Thank you!