Voltage Drop
 

I have a '72 442 convertible I purchased new. When I use one electrical accessory such as the power windows when another is running, the accessory seems to run slightly dim or slowly. The alternator output and battery output seem to be okay. Could a 31-year old wiring harness have an increasingly high voltage drop? That's a little more complex for me to check.

Thanks for any experience.

check the voltage regulator. i have $5 on the voltage regulator.....:mwink:

Thanks for the tip. My car has an integral voltage regulator, but I'll see what develops.

Thanks again.

P.S. Years ago, tracking down problems used to be a lot easier!

31 years can do a lot of things to wires, eh? MAYBE there's a weak connection somewhere?

Alan
54 Chevy Pickup

What's your idle speed? Sometime raising it a little is all you need.

Take a look at all the grounds. All those years of moisture will leave the connecting points pretty rusted.

Voltage Drop
 

Thanks for the idea. A little sandpaper, some WD-40 and a skosh more idle speed may fix the problem.