Nope, did not do that.
When I jump the leads from Bat to Arm this is with the engine off?
I'll give it a shot and then try reading it with the leads off as you described. Anything will help at this point as finding a replacement is going to be iffy & I dunno if the crazy lookin old guy that rebuilt this for me is still available. Not fun havin a dead truck!


1956 GMC 370 dump " 'Tater "
1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI

I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion!
:P