Hi,
The regulator is a simple bimetal switch. It needs a load to operate. Without the other three gauges there's not enough resistance to heat the bimetal and operate the switch. You maybe able to replace the load which a resistor. Maybe an electrical engineer could tell you the size of the resistor needed, or the regulator has an adjustment. But, I don't know if it can be adjusted that far.

Good Luck!
Chuck

 

Not directly to your question but perhaps something to think about... JamesW speaks of solid state CV regulator about one third down on this page.

- Gord

 

The Ford test for the CV Regulator is to place a meter or test light between the plug and the sending unit connection and turn the ignition key on. The meter or light will show 12V or light will come on constant for about 5 seconds and then flicker on and off at a constant rate. If it does this the CV regulator is good. I thought I had a problem with my temp sending switch and did this test to verify CV regulator was not the problem.
Rick Allen/Oceanside, CA

 

Hi,
Now, I thought about this overnight, the reg. has a resistance wire in it and should operate alone.
Amazing what a good nights sleep will do
Chuck

 

Thanks for the link for the solid state regulator from radio shack. I thought about that & thats the route I'm going to try first. The CVR has got to be bad, since the fuel gauge used to work up to 2 days ago. The temp & oil have been disconnected for almost a year now.

 

depends on how your meter processes input. try it on AC and see if you get a reading. if you have a smpling meter put it on DC and sample. then keep updating reading and you should bounce between 12 Vs and 0Vs.

 

I can get the CV Regulator at A&M for $10 plus shipping...Let me know if your interested?