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My wiring mech says 8/9 go to "amplifier"? I did not find this in the M37, assume this is for radio command truck with a huge electrical load?

Thanks!

I show #8 wire is the positive for the ( deleted ) amp gage and #9 is the neg for same. These were not used when the military switched the trucks to voltmeters ( and the 5 wire inst harness )

M - thanks much. I recently bought an old harness and it was a 4 wire coming out of the regulator. Was just wondering so thanks - Keith

I may need to clarify "not used" as in with the amp meter, you may need #8 for the voltmeter and maybe add a double plug to supply the 5 wire, you'll have to check behind you inst panel and see which# wire on your old harness runs to your voltmeter just to make sure.