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**The Rocknrod** · 04-05-2021, 05:18 PM

I had a 73-87 oil pressure gauge install done on my gauge panel and dont get any pressure readings.
Some background:
I have a known grounds bus bar I'm taking ground readings from.
I have grounds at the gauge panel, ground continuity to the sender (PS154), engine block and gauge ground lead itself.
I have 12V power to the gauge with power on.
I have continuity from the gauge end sender wire to the sender (engine) end.
I grounded the sender wire from the sender (engine end) the gauge went from zero to 1/4.
Unplugged it the gauge went to zero (the bottom/left).
Here is a pic of the back of my gauge. Could the sender wire and power wire be crossed? I did't want to move them yet as I was afraid to damage the gauge.

04-05-2021, 05:18 PM	#1
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Oil Pressure Gauge I had a 73-87 oil pressure gauge install done on my gauge panel and dont get any pressure readings. Some background: I have a known grounds bus bar I'm taking ground readings from. I have grounds at the gauge panel, ground continuity to the sender (PS154), engine block and gauge ground lead itself. I have 12V power to the gauge with power on. I have continuity from the gauge end sender wire to the sender (engine) end. I grounded the sender wire from the sender (engine end) the gauge went from zero to 1/4. Unplugged it the gauge went to zero (the bottom/left). Here is a pic of the back of my gauge. Could the sender wire and power wire be crossed? I did't want to move them yet as I was afraid to damage the gauge. Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?