OK, just when I think I'm getting a handle on all things electrical I run head first into something that doesn't work even though I think it should. I have 3 extra ammeter gauges in my pile of old parts and I'd like to use one of them in Speedy, my '48 GMC, where I'm replacing the modern gauge cluster with an original style one. I've managed to Frankenstein a cluster together, refacing the gauges as I go, but before I reface and install the ammeter I want to make sure that it works . I thought I would enlist the help of my '48 Chevy truck, Pokey, by carefully attaching jumper wires from his working ammeter to the terminals on the ammeters I want to test. I do,but nothing happens on the gauge I'm try to test though the gauge in the dash works fine. Is this a method that should work to test the gauge or is it completely stupid? Wouldn't be the first time for me! Thanks, Jim
