The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Fuel gauge, front fender marking lights quit working after new cluster installed

data89 · 06-02-2023, 09:02 PM

Okay, warmed up, back at it.

Everything works except the fuel gauge. Gauge tested good, tank sending unit tested good. Wire colors checked on cluster plug correct. Sending wire from tank plugged into top fuel tab on fuse panel.

New 7 hole cluster circuit with Temp-Fuel-Alt-Bat two tabs taped off as they are not used. These gauges are wired separately (Autometer)

12v at ign tab on fuse panel with ign turned on. Shouldn't I then have 12V at pin 3 on the cluster plug? Or do I need to run a separate wire from the fuel gauge 12V pin directly to the fuse ign tab?

06-02-2023, 09:02 PM	#20
data89 Registered User Join Date: Jul 2010 Location: Watertown, WI Posts: 72	Re: Fuel gauge, front fender marking lights quit working after new cluster installed Okay, warmed up, back at it. Everything works except the fuel gauge. Gauge tested good, tank sending unit tested good. Wire colors checked on cluster plug correct. Sending wire from tank plugged into top fuel tab on fuse panel. New 7 hole cluster circuit with Temp-Fuel-Alt-Bat two tabs taped off as they are not used. These gauges are wired separately (Autometer) 12v at ign tab on fuse panel with ign turned on. Shouldn't I then have 12V at pin 3 on the cluster plug? Or do I need to run a separate wire from the fuel gauge 12V pin directly to the fuse ign tab?