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ccatlett1984, Back when all this problem started about two years ago, I was having glow plugs only last about a week. After three sets, I suspected the Resistors, so I bought a set of civi self regulating glow plugs and wired 12 volts to the relay. worked great for a year until I started getting...

ida34, well..... I thought I was a smart feller, but I guess I'm just a fart smeller, because when I got home tonight, I put one of those cheapo christmas tree light alt testors on my #1 alt and started the truck and noticed that the alt was putting oout only 12.5v at idle. The second I...

I'll look under the dash tonight. The card is in it's place hanging near the steering column and the glow light only comes on for cold starts and shows no current draw on the gauge after a minute or so. I had looked around prior, looking for loose or spliced wires, but found none. Now i'll...

That's interesting, I haven't had any low battery problems and I let the truck sit for a week at a time. I would think the glow plugs would draw the batteries down within a day. I'll have to check for wire harness butchery.

Ida34, if you look at the schematic of the cucv glow system, you will notice that the glow plug relay has two controlling wires. They are the small ones. One is blue and one is orange in color. The blue wire leads to a ground somewhere. I had a problem with a cucv and when I grounded the...

Ida34, the switch located on the rear of the right head just rearward of the exhaust manifold is the Cold Start Advance Switch. The CUCV and Humvee both use this place for this switch. The Humvee switch has the water proof connectors as mentioned by Emmado22. The glow plug temp switch on the...