Testing gauges

[afterglow]

I'm looking for some help troubleshooting my instrument gauges in my 69 Mach 1. They're either dead or don't seem to be reading right.....I simply can't trust them until I know for sure they're working properly. I have two complete sets of gauges and my current method involves swapping gauges between the two sets. I have a new circuit board and regulator and the lights on the gauges work fine.

Can anyone help me with a step-by-step on how to test to find out where the problem is?? Pictures would help A LOT since I'm not quite sure where the senders are. I'm hoping I don't have to buy a third set of gauges to solve the problem....

 

[jikelly]

Well, I would think you need to

1, Check your connections to your sending units. The water should be on top of you intake manifold somewhere, your oil sender is near your fuel pump in the block (it looks kinda like an metal acorn) Your voltage gauge or amp meter just connects into the wiring harness under your dash.

2. Check your voltage levels coming into you gauges. The first thing I thought of was probably your voltage regulator was not working correctly, but since you say you have a new one, install it and then check to see what voltage it is providing.

3. Check your gauge wiring and grounds. In fact make sure your battery's negative terminal is properly grounded to the block/frame still. Corrosion in the cable can lead to a poor ground.