Ive had many of them pretty much had to replace the switch in all of them.Seems they cant take the current and after years they go kaput.Same with the amp gauge.Every one Ive had with it Ive done away with them.Install a volt meter.Easy to do just remove the 2 wires and I would screw them together and then tape up.Two of minbe would actually stop and lose power when I plowed Then after eliminating the gauge no problem