The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Ammeter to Voltmeter

tim_mc · 06-06-2020, 10:12 AM

Here's a pic of the 67-72 face on the voltmeter. I set the needle for 12v in the straight-up position, and used a 13.8vdc power supply to confirm it in the "charging" position.

In the second pic I repurposed the AAW harness yellow and purple VSS leads and connector for the voltmeter. Yellow is ground, and purple (12v ignition) is spliced to a bullet connector for future use, and the gray lead in the #1 position in the gauge connector (lower right).

I probably over-thought this, but it was a winter project when I couldn't tackle other things.

06-06-2020, 10:12 AM	#30
tim_mc Registered User Join Date: Jan 2019 Location: St Peters, MO Posts: 454	Re: Ammeter to Voltmeter - New American Autowire Harness Here's a pic of the 67-72 face on the voltmeter. I set the needle for 12v in the straight-up position, and used a 13.8vdc power supply to confirm it in the "charging" position. In the second pic I repurposed the AAW harness yellow and purple VSS leads and connector for the voltmeter. Yellow is ground, and purple (12v ignition) is spliced to a bullet connector for future use, and the gray lead in the #1 position in the gauge connector (lower right). I probably over-thought this, but it was a winter project when I couldn't tackle other things. Attached Images __________________ 1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. Last edited by tim_mc; 06-06-2020 at 11:09 AM.