Skip to main content ↑ ↓
Topic: What is this switch for under the mirror switch? 1994 Foretravel unihome  (Read 485 times) previous topic - next topic

What is this switch for under the mirror switch? 1994 Foretravel unihome

Hello,
I am trying to figure out what these switches are for under the mirror switch. I believe one is for heated mirrors. The one is a fan but I don't know what it turns on. My only guess for the middle button would be an ether switch.

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #1 –
Docking lights?
1993 U300 40ft GV SE
Build # 4344

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #2 –
It is a momentary switch if that helps.

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #3 –
Engine override would be my guess. It disables the engine shut down for low coolant while you hold it so you can get the coach moved off the road if needed.
1991 U300 Side Aisle 6V92 Silver #3897
2004 U320 40' #6246

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #4 –
Our 1993 U280 came with factory installed ether injection (long gone now).  The activation switch is a black momentary rocker.  No red insert.  I've not seen a switch like the one in your photo, so purpose is a mystery to me.

Our coach has a "FANS" rocker switch that controls an air circulation fan located in the header up above the windshields.  The fan has 2 speeds and blows air out of vents above the driver and passenger seats.

Photo of our switch panel.  The BATTERY switch is one that I added - the rest are original.

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #5 –
Ether injection would make sense too from that icon. It was used as a cold start assist.
1991 U300 Side Aisle 6V92 Silver #3897
2004 U320 40' #6246

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #6 –
Quote from: kgrover –
Ether injection would make sense too from that icon. It was used as a cold start assist.
I think this is probably correct.  I'm guessing that the switch is upside down for whatever reason.  The symbol makes more sense when flipped.
Dave and Kelli
1997 U295 40' Build #5188 CSGI
1995 U240 36' Build #4621 SBID-SOLD
2006 Jeep Wrangler Rubicon

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #7 –
If the coach was originally equipped with ether injection, and if the hardware is still present in the engine compartment, then the links below will illustrate what to look for.  Basically a metal cylinder containing liquid ether, about the size of a standard disposable propane cylinder, that is screwed into a base that contains an electric valve.  Small diameter tubing runs from the base to a fitting somewhere on the intake side of the engine.

When you depress the switch on the dash, if certain conditions are met (varies with engine control system) then a calibrated amount of ether is injected into the engine.

Propane warning beeping

Ether system

You might be surprised at the asking price for a refill cylinder!  :o

https://www.oreillyauto.com/detail/c/zerostart/oil--chemicals---fluids/maintenance-chemicals/fuel-system-chemicals/starting-fluid/4a677457b383/zerostart-diesel-ether-injector-cylinder/zro0/8200327/v/a/146569/automotive-car-2019-chevrolet-bolt-ev?3


1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #8 –
I was reading the owner's manual and it says that our model was not equipped with ether. It also says that if it had ether it would be a different switch on the dash. We do have the ether switch on the dash but it is just unmarked.

Also, it was mentioned by Chuck & Jeannie that their "coach has a "FANS" rocker switch that controls an air circulation fan located in the header up above the windshields." our coach has this switch as well and it is located on the dash near the unused ether switch.

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #9 –
are the wires that are connected to it labeled anything?
1991 U300 Side Aisle 6V92 Silver #3897
2004 U320 40' #6246

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #10 –
The switch may have been changed or added at some point.  I still say if flipped around it looks like an engine symbol with something spraying or shining down from the top right. Maybe even a clockwise arrow in the engine symbol?
I took a screenshot of the OP's Pic and flipped it.
Dave and Kelli
1997 U295 40' Build #5188 CSGI
1995 U240 36' Build #4621 SBID-SOLD
2006 Jeep Wrangler Rubicon
 

Re: What is this switch for under the mirror switch? 1994 Foretravel unihome

Reply #11 –
Possibly an eng pre heat?
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel