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I installed a small "ice cube" style relay that switches the volt meter connection from the orange wire that monitors the GP voltage to the 12 volt side of the electrical system.

I purchased 3 of these relays from Murcal along with a DC voltmeter. Installed the voltmeter next to the factory 24v meter. The voltmeter monitors the output of the GP relay via the Orange wire to the GP card. After the GP relay opens the voltmeter automatically switches to monitoring the 12v...

Dang! Forgot to refill the smoke. Looks like the contactors did not rotate and I agree with cpf20, carbon build up on the contact surfaces. The copper had no noticeable pitting of the mating surfaces. The truck has been modified with the resistor bypass. The GP's are fed with 12 volts. Mfg...

I used a vise to pinch the top off. It popped right off and was only slightly distorted. Reinstalling the top was done with the universal BFH. I should seal it a little better, with some waterproofing materials, but for now it will be a spare unit.

My M1009 became increasingly hard to start when the glow plugs were needed to be on. Finally one morning it wouldn't start at all. Batteries are good, glow plugs are good and my GP card is good, relay made normal noise when closing. After getting a volt meter from my work truck, found that I...