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Say is there a way to polorize the generator to see if it is charging, like connect a wire to the voltage regulator somehow? without taking out the generator to have it bench tested? I bought a new Voltage regulator for the M37 but has not come in the mail yet.

Here is how the battery system is set up when I bought the truck

Well I need to find out if it is not the voltage regulator too and not the Generator too, or both maybe gone. all I know after a full charge the truck sure likes to drain my batterys fast. I see that they sell rebilds and new voltage regulators at vintage power wagons.

Well I have read this and I don't think I can do this type behind the motor pool job, it might be easier for me to either get another Generator and or voltage regulator the date on my voltage regulator is 8/1954 for a 1953 truck so maybe it was time for it to die. anyway I have new battery's not...

Ok I did not see a voltage regulator on this model or did I not see it? thank for your information I did find 4 on eBay for the M37 series but mine only takes a single belt these come with a dual belt like you would add another belt to it for something else like possible power steering maybe...

Ok I think I found my problem why it is NOT keeping a full charge, after charging the two battery's to a full charge my battery Gage was in the green, but after a half hour it was in the red so my question is could it be the Generator that is bad? I have no way of testing this because I'm...

Ok both my battery's are dead maybe that's why my battery Gage never went past the red, but never had a problem when starting but right now I know you can't jump start a 24 volt system with a 12 volt jump starter, I have slave cables for this model but standing along side the road with these is...