Gauges

[Chevycowboy1985]

I have a 81 gmc 4x4 had stock gauges with the big fuel gauge and a got hole gauge cluster with the tach and the wiring so hooked it up and the oil pressure gauge does not work now change out oil gauge for old one and still does not work. It worked before I change it any ideas thanks

 

[RetroC10Sport]

Check to make sure your printed circuit is good and you have continuity through it for the oil pres. gauge. They are easily damaged. I'm betting that's where your problem lies.

 

[Chevycowboy1985]

Thank will have to try that when I get a chance

 

[HotRodPC]

Check to make sure your printed circuit is good and you have continuity through it for the oil pres. gauge. They are easily damaged. I'm betting that's where your problem lies.

I'd agree with this. BUT, how about swap that electric oil guage out for a manual guage in a later model truck? Or am I backwards, and mean earlier model truck?

 

[crazy4offroad]

Mechanical oil pressure was in 77 and older. More than likely you're going to have to change the pinouts a little. Get a wiring diagram and start tracing, if everything else works ok, turn signals, etc then you may just have to swap a couple wires.

 

[bucket]

Mechanical oil pressure was in 77 and older. More than likely you're going to have to change the pinouts a little. Get a wiring diagram and start tracing, if everything else works ok, turn signals, etc then you may just have to swap a couple wires.

If both clusters are '78 or newer, it should swap without moving pins. The only time you have to move pins is when swapping from a mech oil cluster to a electric oil cluster, or vice versa. My vote goes to a bad spot in the printed circuit.