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prairieschooner · 07-16-2010, 01:56 AM

I would always start the Ground Wire, it should be easy to check. OK find a Hot Wire (12 Volts DC +) and a Ground (12 Volts DC -). Now check from the Hot to the Ground at the Gauges and then reverse the check and check the Ground to the 12 Volts DC (+) at the Gauges. If the readings are questionable you need run the wires from the Engine Battery to the Gauge Panel just to be sure. This problem sounds like a voltage problem rather than a Sending Unit, to test a Sending Unit you can ground the Sensor Wire for a SHORT PERIOD of time and the Gauge should peg (just make sure that you don't connect the sensor to ground and then lallygag!!!)
Our '82 has Fuses under the Glove Box area.

07-16-2010, 01:56 AM	#4
prairieschooner Senior Member Join Date: Jun 2009 Location: Idyllwild, CA Posts: 1,340	I would always start the Ground Wire, it should be easy to check. OK find a Hot Wire (12 Volts DC +) and a Ground (12 Volts DC -). Now check from the Hot to the Ground at the Gauges and then reverse the check and check the Ground to the 12 Volts DC (+) at the Gauges. If the readings are questionable you need run the wires from the Engine Battery to the Gauge Panel just to be sure. This problem sounds like a voltage problem rather than a Sending Unit, to test a Sending Unit you can ground the Sensor Wire for a *SHORT PERIOD* of time and the Gauge should peg (just make sure that you don't connect the sensor to ground and then lallygag!!!) Our '82 has Fuses under the Glove Box area. __________________ have Coach will Travel Steve & Tricia 1982 Newell 38' (built before #1) 6V92 DD, 5 Speed Allison, 12.5 KW Kohler, Couch used to make into a Bed but I fixed it! https://newellshowcase.com/thumbnails.php?album=214 2007 Yukon, 1981 CJ7 Laredo, 2002 Honda CRV, 1955 Thunderbird, 1952 Pontiac Sedan Delivery, 1952 Ford 8N, 1958 Airstream, 1959 Glasspar 16' Avalon, Cabin in the Woods........what will I work on next [SIGPIC][/SIGPIC]