Unknown Switch - Printable Version

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+--- Thread: Unknown Switch (/showthread.php?tid=3377)

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Unknown Switch - NextNewell - 03-07-2017

Does anyone know what this switch might be for? It's right above the radiator on the passenger side and next to a small locking door for the coolant reservoirs?

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RE: Unknown Switch - Fulltiming - 03-07-2017

Very interesting. My coach is 11 after yours (281) and I don't have the door, the switch or what appears to be a warning light that show in your photo. I have no idea but it appears to be in the on position.

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RE: Unknown Switch - Richard - 03-08-2017

If you open the door can you see where the wiring leads?

Given it's location, is it possible it is a sensor to check the coolant level? Clever, if that is what it is.

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RE: Unknown Switch - ccjohnson - 03-08-2017

Check with Tommy or Creslie at Newell. 888-363-9355. They are both real good at that stuff from just coach # & year. If I had to guess, I would say burglar alarm system. But that is really just a WAG.

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RE: Unknown Switch - HoosierDaddy - 03-08-2017

My guess would be: a switch to convert from us style trailer lights to euro-spec or it controlls an engine bay light.

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RE: Unknown Switch - PlazaGuy - 03-09-2017

(03-07-2017, 04:59 PM)Newell270 Wrote:  Does anyone know what this switch might be for? It's right above the radiator on the passenger side and next to a small locking door for the coolant reservoirs?

We had a 1990 and the switch is part of the heating system. I can't remember the name of the system, but there are two reservoirs behind the door by that switch. One feeds the front part of the heating system and the other feeds in the bedroom area. If you have no heat you can check those two little reservoirs by unscrewing the top and if they are low you take the tube that is in the picture insert into the reservoir, flip the switch and it pumps a 50/50 mixture of antifreeze and water from a larger reservoir that's located on the firewall in the engine compartment on the passenger side. Of course, you would have to had put that mixture in the larger reservoir for it to do that. My phone # is 913-220-9553 if you have questions you think I could answer.  Ed Perkins

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RE: Unknown Switch - PlazaGuy - 03-09-2017

(03-07-2017, 04:59 PM)Newell270 Wrote:  Does anyone know what this switch might be for? It's right above the radiator on the passenger side and next to a small locking door for the coolant reservoirs?

The name of the Heating System on the 1990 that we had was called Primus.  Tommy Key at Newell knows all about this system...he had to fly all over the country fixing them.  We just went to a distributor in Elkhart, IN and got ours fixed. Don't see any recent posts about this system on the internet.

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RE: Unknown Switch - Fulltiming - 03-09-2017

No wonder my coach doesn't have that. The original owner had a change order from Primus to standard propane furnaces so I don't have Primus. Great catch Ed.

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RE: Unknown Switch - NextNewell - 03-10-2017

Yes, it is to top off the Primus system from what looks like a windshield wiper reservoir in the engine compartment. 
Another mystery solved, three dozen too go.
Thank you

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