New gauge install - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Fire Rider · 08-08-2013, 10:44 PM

Ok, first truck project 68 step side, but probably the first of many post. I have changed from idiot lights to full gauge cluster, I re-wired the harness and here is what I have.

Dash lights come on with key and stay on
Oil pressure gauge is maxed out on high
Temp stays in the middle
Amps stays in the middle
Fuel gauge is showing way past full, almost another half tank
Tac works fine
Speedo works fine

Where do I go from here? Do I need a different oil pressure gauge? Do I need to replace the fuel sending unit, it worked fine with old gauges? Do I need to convert to a volt meter? All help is appreciated.
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Andy4639 · 08-10-2013, 05:13 PM

Are u sure u reconnected all the right wires. Did u ground the dash back down with a extra ground to metal dash someplace?
Is this what u used to swap it over.

Fire Rider · 08-10-2013, 06:18 PM

I am 99.9% sure that I got them swapped over right as I numbered all of them as I took them out so that I wouldn't get them confused. I have work on cleaning some of the connections and have drove the truck some which has helped me get a better feel for how the temp and amp gauges are working. The fuel gauge is still showing that I am almost a half a tank past fuel and the oil pressure gauge is buried on H (I assume the high volume oil pump is the cause, the truck idles at around 30 psi when hot and 50 psi when you first start it up). I have an after market oil pressure gauge under the ash tray so if I could get the fuel gauge figured out I would be thrilled. I am planning moving the tank from behind the seat to under the bed in the next 2-3 weeks which requires a new sending unit, should I wait before hooking the new sending unit up?

08-08-2013, 10:44 PM	#1
Fire Rider Registered User Join Date: Aug 2013 Location: Clinton TN Posts: 2	New gauge install Ok, first truck project 68 step side, but probably the first of many post. I have changed from idiot lights to full gauge cluster, I re-wired the harness and here is what I have. Dash lights come on with key and stay on Oil pressure gauge is maxed out on high Temp stays in the middle Amps stays in the middle Fuel gauge is showing way past full, almost another half tank Tac works fine Speedo works fine Where do I go from here? Do I need a different oil pressure gauge? Do I need to replace the fuel sending unit, it worked fine with old gauges? Do I need to convert to a volt meter? All help is appreciated. Posted via Mobile Device

08-10-2013, 05:13 PM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: New gauge install Are u sure u reconnected all the right wires. Did u ground the dash back down with a extra ground to metal dash someplace? Is this what u used to swap it over. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

08-10-2013, 06:18 PM	#3
Fire Rider Registered User Join Date: Aug 2013 Location: Clinton TN Posts: 2	Re: New gauge install I am 99.9% sure that I got them swapped over right as I numbered all of them as I took them out so that I wouldn't get them confused. I have work on cleaning some of the connections and have drove the truck some which has helped me get a better feel for how the temp and amp gauges are working. The fuel gauge is still showing that I am almost a half a tank past fuel and the oil pressure gauge is buried on H (I assume the high volume oil pump is the cause, the truck idles at around 30 psi when hot and 50 psi when you first start it up). I have an after market oil pressure gauge under the ash tray so if I could get the fuel gauge figured out I would be thrilled. I am planning moving the tank from behind the seat to under the bed in the next 2-3 weeks which requires a new sending unit, should I wait before hooking the new sending unit up?



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