12-22-2017, 08:13 PM
On the 77 coach I had there was a place at the top of the rear panel on the forward side of it where the signal from the front was attached to the switch for selecting front or rear starting. When I had the problem you are having it was that connection that had gotten corroded.
However, rather than following our individual suggestions I think you would be better off checking the voltage at the point I just suggested with the key in the start position. That splits the circuit in half, if there is voltage then the problem is downstream. If no voltage then the problem is upstream. BTW, I don't recall the 77 coach having a relay in the starting circuit, just straight electrical feeds, but it has been a few years and I don't have the coach to look at.
However, rather than following our individual suggestions I think you would be better off checking the voltage at the point I just suggested with the key in the start position. That splits the circuit in half, if there is voltage then the problem is downstream. If no voltage then the problem is upstream. BTW, I don't recall the 77 coach having a relay in the starting circuit, just straight electrical feeds, but it has been a few years and I don't have the coach to look at.
Jon Kabbe
1993 coach 337 with Civic towed