Dodge vehicles were notorious for that particular failure. Here's what you should read:

http://www.madelectrical.com/electricaltech/amp-gauges.shtml


Since I'm not sure what your 1975 van instrument cluster looks like, I'm not sure if you can so easily replace the ammeter with a voltmeter, but the article will give you the idea of what to do to get you running again, and in better shape than the factory wiring allowed for.

Clear skies!

-It's been such a LONG TIME... BlueShift>> 1981 Dodge Ram B250 Custom Sportsman Maxi Van


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