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BMXerror |
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#1
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 ![]() |
Okay, my new oil pressure gauge that I just wired up does something weird. When I turn ignition on it shoots all the way past the max reading (80 PSI). I can unplug the sensor wire from either the gauge or sensor side and the gauge stays pegged. If I unplug the ground on the gauge it drops to zero, and doesn't do anything when the engine's turned on (sensor plugged in). You would think it's hard to screw up such simple wiring, but I seem to have managed.
VDO gauge experts, the power lead comes from the fuse terminal to the + terminal on the gauge. The sensor wire is plugged into the 'S' terminal on the gauge. The ground is plugged in on the bottom terminal, which I'm assuming is the ground. That's what the diagram says, anyways. I'm using 16 gauge wire all around. (IMG:style_emoticons/default/WTF.gif) (IMG:style_emoticons/default/confused24.gif) Any help? Mark D. |
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SLITS |
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#2
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"This Utah shit is HARSH!" ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None ![]() ![]() |
You have to have the sensor and ground mixed up (on the guage). Try switching the leads to those two terminals.
To test a guage, you ground the sensor wire with voltage applied to the + terminal and the guage swings full. or The guage is bad internally. I think I have a couple of guages if you want to try another. |
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