'72 F250 oil pressure gauge not reading: need hi-res photo of back of '72 cluster

[farmallmta]

I'd like to view a high resolution photo of the back of a '72 dash cluster so I can get some idea of connections back there without having to remove the entire instrument cluster from the dash.

Thanks for any help you can offer with a high resolution photo of the back of the '72 dash cluster.
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[sargentrs]

The oil pressure switch works by grounding out at the engine block. Remove the wire from the switch and ground it to the block. Your gauge should peg out to H. If so, your oil pressure switch is bad. If not, then move up to the instrument cluster and check the pin on the plug from the harness. Should read voltage with key on. It's the white wire with the red stripe. http://www.fordification.com/tech/wirin ... _quick.jpg If you have voltage at that end but the gauge is not moving when you ground it, then suspect a wiring short somewhere between the 2 points.

[farmallmta]

The oil pressure switch works by grounding out at the engine block. Remove the wire from the switch and ground it to the block. Your gauge should peg out to H. If so, your oil pressure switch is bad. If not, then move up to the instrument cluster and check the pin on the plug from the harness. Should read voltage with key on. It's the white wire with the red stripe. http://www.fordification.com/tech/wirin ... _quick.jpg If you have voltage at that end but the gauge is not moving when you ground it, then suspect a wiring short somewhere between the 2 points.

Thanks. Is there a male terminal on the back of the gauge cluster, approximately behind the oil gauge that a female lead slips onto? Or is the oil pressure gauge controlled by a printed circuit fed by a multiple plug elsewhere on the dash cluster? I'm aware of the change to printed circuits by 1972, that's why I was hoping somebody had a higher resolution photo of the back of the dash cluster. I can feel "terminals" back there, but am not sure if those are component fastening studs or electrical male terminals. Pretty simple question, really, and hoping I don't have to remove the cluster from the dash just to see what the back looks like.

[sargentrs]

Or is the oil pressure gauge controlled by a printed circuit fed by a multiple plug elsewhere on the dash cluster? I'm aware of the change to printed circuits by 1972, that's why I was hoping somebody had a higher resolution photo of the back of the dash cluster. I can feel "terminals" back there, but am not sure if those are component fastening studs or electrical male terminals. Pretty simple question, really, and hoping I don't have to remove the cluster from the dash just to see what the back looks like.

It's the above. The harness ends in a 12 pin connector which plugs directly into the printed circuit board on the back of the cluster. I circled it red.

Instrument Cluster Wiring.JPG

[farmallmta]