jjroxus Posted March 17, 2022 Share Posted March 17, 2022 I just got my 2002 signature with ISM 500 back from the Cummins shop. I had requested they repair my jake brake system which has never worked since I purchased the coach. They said the problem was OEM electrical and would not work on it. So I need help. My Signature has the foot switch and arm rest hi/lo switch. I check the foot switch and it is passing 12v. I have the arm rest apart so can see all the wiring. The hi/lo switch is connected and has a voltage reading of 9.5v all the time-its there even when the key switch is off. The foot switch has no effect on the hi/lo switch. That’s where I am… Link to comment Share on other sites More sharing options...
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