1976 280z multiple gages not functioning

[Brae]

Now that I've got the car running I'm trying to fix the gages but a few of them dont seem to work. for the temp/oil gage the oil works but the temp doesnt, I believe becaus my water temperature sensor isn't working .. but im not 100% sure. for the volt/fuel gage i cant get a reading on either, but the light goes on when i turn the key "on". the clock also doesn't work. Thanks in advance

[beermanpete]

The common test is to ground the wire(s) that connect to the sender units one at a time. The corresponding gauge should go to full reading pretty quickly. If the gauge responds then the sending unit is bad. If not the meter is either bad or there is a wiring problem.

There is no sending unit for the voltmeter. It simply connects to the battery through the ignition switch.