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

ray_mcavoy · 03-17-2017, 03:34 PM

Hi Jeff,

The factory gauge cluster uses pin #3 for ground and pin #4 for power to the voltmeter. The wire colors are black (ground) and pink with a black stripe (ignition switched power).

There should also be ignition switched power (pink w/black stripe) wires going to pins #6 and #16 that power the various other gauges & some indicator lights. The factory wiring has these two wires (along with the one from pin #4) all leading back to a common splice inside the harness. So if that wire that originally went to #4 is missing you can simply splice a new one to either of the other pink w/black stripe wires.

It is normal for the cig lighter to have power all the time.

03-17-2017, 03:34 PM	#2
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,354	Re: Voltmeter intall question Hi Jeff, The factory gauge cluster uses pin #3 for ground and pin #4 for power to the voltmeter. The wire colors are black (ground) and pink with a black stripe (ignition switched power). There should also be ignition switched power (pink w/black stripe) wires going to pins #6 and #16 that power the various other gauges & some indicator lights. The factory wiring has these two wires (along with the one from pin #4) all leading back to a common splice inside the harness. So if that wire that originally went to #4 is missing you can simply splice a new one to either of the other pink w/black stripe wires. It is normal for the cig lighter to have power all the time.