Newly Installed Instrument Panel not Working - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Back in Black · 05-17-2005, 01:07 PM

I recently ran power to my cab and my instrument panel is not working correctly. The right blinker light stays on and the fuel gause slowly moved to fuel even though the tank is almost empty. It kind of acts like a grounding issue. I checked the ground cable for the instrument panel and rehooked it up, but no changes.

Has anyone had this problem before. I plan to tear into it soon and use the wiring diagram provided by another member and hopefully figure it out.

Any advice would be appreciated.

Jason

cwilkie · 05-17-2005, 03:32 PM

Mine had the same problem when I hooked it up after installing a tach. Once I attached the oil pressure line it grounded the cluster and the problem was gone.

Chance

HuggerCST · 05-17-2005, 03:54 PM

Make sure that your cab has a good ground to your engine and frame. For a quick check, attach jumper cables between them. Also, if you changed from a 3 hole cluster to a 7 hole cluster, make sure to change the harness too. They are different, but you probably know that.

Back in Black · 05-17-2005, 06:05 PM

Not sure this matters, but the wiper motor works. Not sure if the wiper motor relys on grounding to the cab or is grounded via the wiring harness.

05-17-2005, 01:07 PM	#1
Back in Black Registered User Join Date: Dec 2004 Location: Donnelly, MN Posts: 52	Newly Installed Instrument Panel not Working I recently ran power to my cab and my instrument panel is not working correctly. The right blinker light stays on and the fuel gause slowly moved to fuel even though the tank is almost empty. It kind of acts like a grounding issue. I checked the ground cable for the instrument panel and rehooked it up, but no changes. Has anyone had this problem before. I plan to tear into it soon and use the wiring diagram provided by another member and hopefully figure it out. Any advice would be appreciated. Jason

05-17-2005, 03:32 PM	#2
cwilkie Chance Join Date: Sep 2001 Location: Belcourt ,ND, USA Posts: 750	Mine had the same problem when I hooked it up after installing a tach. Once I attached the oil pressure line it grounded the cluster and the problem was gone. Chance __________________ 1968 Chevrolet Stepside BB 396 w/TH400 1972 Chevrolet 3/4 Ton 4x4 BB 496 w/TH400

05-17-2005, 03:54 PM	#3
HuggerCST Registered User Join Date: Jul 2001 Location: North Louisiana Posts: 4,501	Make sure that your cab has a good ground to your engine and frame. For a quick check, attach jumper cables between them. Also, if you changed from a 3 hole cluster to a 7 hole cluster, make sure to change the harness too. They are different, but you probably know that. __________________ Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com

05-17-2005, 06:05 PM	#4
Back in Black Registered User Join Date: Dec 2004 Location: Donnelly, MN Posts: 52	Wiper motor works Not sure this matters, but the wiper motor works. Not sure if the wiper motor relys on grounding to the cab or is grounded via the wiring harness.



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