Instrument cluster regulator

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70Duster340

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I have installed an electronic regulator in my gauge cluster (the cluster is out of the car), but how do I test it before I reinstall the cluster?

Thanks!
 
Apply 12 volts to the correct pin.
Ground to the correct location.

Because it is electronic you might be able to check the voltage on the correct pin.

Or you can get some 10 watt resisters 10 ohm, 22 ohms and 73 ohms or there about. And put between the correct pin and ground and watch for needle movement.

I'm being vague on which pin because none of us know what you are working on.
 
^^ and also^^ there could easily be other problems with the cluster PC board that need attention
 
I've checked the gauges while I had it apart, and individually they all worked. But I don't know how to test them once the regulator is installed.
 
If you get your wiring diagram and trace out the pins on the dash you will see which wire does what.

You can also trace out the PCB from pin to each guage and indicator light.

Ultimately you will be supplying 12v to the 12v pin. Then testing the guages as you did while they were out. (Minus the power you supplied to the guages when they were out as the 12v feed and the regulator is doing that now)
 
No you get resistors to simulate the low, the mid scale, and hi scale ends of the gauges, Dana67 already posted. Or if you have a rheostat or spare gas sender, move it to those resistances with your ohmeter and then see where each gauge goes. All three gauges should indicate the same (one at a time) with the same resistance tied to the sender post

This is a 3rd party gauge tester from "back then" and Chrysler made a similar one. They were a switchbox containing three resistors

c-3826-jpg-jpg.jpg
 
70Duster340 said:
I have a good fuel sender. I will try to hook that up, or maybe I can find an old volume dial to use.
Click to expand...

If you are talking about a volume control pot out of a radio, that won't work--not enough wattage and way too high resistance. But fuel sender is great
 
Folks, I hate to seem ignorant, but how do I wire up the sending unit to each gauge, using a battery as the power source?

Thanks!
 
Jumper wire from negitive batt cable to the metal tube of the pickup.

Sender wire jumpered to the proper pin on the cluster.
 
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