keithharbuck Posted February 22, 2020 Share Posted February 22, 2020 Speedometer is working but my mileage gauge has a error1 code on it. Plus rpm gauge is not working. What could be the problem Link to comment Share on other sites More sharing options...
Chuck B 2004 Windsor Posted February 22, 2020 Share Posted February 22, 2020 Year and model coach? Link to comment Share on other sites More sharing options...
keithharbuck Posted February 22, 2020 Author Share Posted February 22, 2020 (edited) 2000 Monaco Windsor Sorry about that. Edited February 22, 2020 by keithharbuck Link to comment Share on other sites More sharing options...
Chuck B 2004 Windsor Posted February 22, 2020 Share Posted February 22, 2020 The biggest problems with dash gauges are the connections on the back of the gauge are loose. The ground wires on the back of the gauges are daisy chained from gauge to gauge ending up on a ground buss bar on the firewall. Loosen up all the screws holding the ground wires to the buss. Spray them with WD 40 and tighten the screws up. Clean up the back side of the buss bar with fine sand paper. Gain access to the back side of the gauges and tighten up all the nuts. Hopefully that will solve your problem. Chuck B Link to comment Share on other sites More sharing options...
keithharbuck Posted February 22, 2020 Author Share Posted February 22, 2020 Will try this when I get back to home base tomorrow. Will let you know how it turns out. Thanks. Link to comment Share on other sites More sharing options...
Mel S - '96 Safari Posted February 22, 2020 Share Posted February 22, 2020 1 hour ago, Chuck B said: The biggest problems with dash gauges are the connections on the back of the gauge are loose. The ground wires on the back of the gauges are daisy chained from gauge to gauge ending up on a ground buss bar on the firewall. Loosen up all the screws holding the ground wires to the buss. Spray them with WD 40 and tighten the screws up. Clean up the back side of the buss bar with fine sand paper. Gain access to the back side of the gauges and tighten up all the nuts. Hopefully that will solve your problem. Chuck B keithharbuck All of the individual ground wires, from each of my dash gauges, go under one single screw in a "ground lug" that looks like this: That lug must be properly grounded to the frame of the coach. Link to comment Share on other sites More sharing options...
keithharbuck Posted February 22, 2020 Author Share Posted February 22, 2020 Thanks. I have noticed the RPM gauge works sometimes when I turn the head lights On so I guess the switch is making the ground through the switch at times Link to comment Share on other sites More sharing options...
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