Remote switches not working on Genset

[Gjac]

Finally fixed my Kohlar 5CKM21 genset and works fine from start switch on genset itself. Neither the dash remote switch or the remote start switch above the stove will start the generator. Both will work to stop the generator but no start on either. Because both switches don't work I figured the problem was not the switch itself and thought I would check the connections at the genset itself for corrosion or loose wiring first. I can see where the wires from the genset start/stop switch plug into the control board then saw 4 wires coming into that plug from another harness up front. Removed plug and re plugged several times but still no start. Any other ideas?

[F4Jock]

Had the same problem. Wires at the remote start plug on the genny were corroded. Rewired. Fixed it.

[rgatijnet1]

Since both switches do not work, perhaps the problem is with the generator ground connection. Of course this is assuming that both of the generator switches have power going to them.
An easy way to check the generator ground connection is with a jumper cable clamped on from the coach frame to the generator frame.

[Dennis12]

Had the same issue. Drove me and others nuts. Ran new wires from gen to dash switch. Problem solved. Must have been shorted wired between the two. Don't dare call for a schematic. Manufacturer did know what that was. That's the industry.

[Gjac]

MountainAir05 wrote:
ohm out the switches.

My next steep was to remove the wires from the back of the dash switch and see if it will start by touching the wires together. If so then I know the switch is bad. I just think that both switches being bad at the same time is unlikely although possible and the problem is elsewhere.

[MySuncoastRV]

The stop portion of the switches uses a grounding circuit. The start switch uses a 12v input. The onboard switch is independent from the remote switches and that's why it functions as normal. Look for a 10amp fuse on the remote switch circuit within the generator cover. More than likely tucked within the wiring loom near the front panel. Hope this helps. Keep us posted.

[Artum_Snowbird]

If you can determine that the plug you removed is indeed the remote start buttons, and you are certain what wires are what, short out at the control board and see if it starts. If that works, get a long two wire piece of cord and try taking the cord to the switch and connect first one wire in parallel with the existing one to see if it makes a difference. Then test the other wire. If one of those cause things to work you are a lot closer to the answer.

[MountainAir05]

ohm out the switches.