Forum Discussion

Salvie's avatar
Salvie
Explorer
Jul 20, 2015

What the heck does this switch do? LOL

Ok, I have a 2007 Thor California 3900GSS FW Toyhauler and an in need of some assistance on what a certain switch works and what it's for. I hope someone can help!!!!

The switch says Atwood on it and it lights red when pressed it is located underneath the fridge next to the inverter/converter and below the master switch. I have a photo but don't know how to imbedd it here so I can send it or if someone can help me inbedd it, that would be great.



Sal
Toy Haulers
  • GMandJM's avatar
    GMandJM
    Explorer
    Jul 22, 2015
    By the way, how EXACTLY is "Atwood" spelled on your switch.

    Atwood (one T) makes RV components like furnaces and water heaters.

    Attwood (two T's) makes lights of all sorts.
  • GMandJM's avatar
    GMandJM
    Explorer
    Jul 22, 2015
    Ya know....Atwood makes landing legs/gear for 5W. Maybe it's the switch for the lights on those. (O/S might mean "outside").
  • Salvie's avatar
    Salvie
    Explorer
    Jul 22, 2015
    Hey 2112, you might be on to something. I'm gonna check underneath my awning.
  • Salvie's avatar
    Salvie
    Explorer
    Jul 22, 2015
    Ok so I made some head way last night. I flipped each breaker and the light on the switch didn't go off so I know it's not AC Power so I then went to the fuse block and pulled each fuse to find that circuit and I got to number 7 of 9 and the light went off. I looked at the labeling on the fuse panel and it states: "O/S Lights" Now I know it's not the exterior lights so I don't know what this is but I'm getting closer.
  • 2112's avatar
    2112
    Explorer II
    Jul 21, 2015
    Not intending to high jack this thread but:

    I had a mystery switch in my new KZ. I had no idea what it was for, dealer didn't say and I didn't go back to ask. I couldn't figure it out and gave up.

    After several months I noticed I had LED lights integrated in the awning. It's no longer a mystery.
  • CJW8's avatar
    CJW8
    Explorer
    Jul 21, 2015
    Very simple process of elimination. Everything off. Start heater/furnace. Switch on, what does heater do? switch off, what does the heater do? No affect? Go the next item. Hot Water heater. Toy fill pump. One at a time with everything else off. You'll find it. Is it possible you have heated tanks? Could be the switch for that.
  • GMandJM's avatar
    GMandJM
    Explorer
    Jul 21, 2015
    Since it says "Attwood", I'm still thinking it's for a furnace. Can you find the furnace and get a model number?

    (Yes, I know Atwood usually means water heater, but they also make RV furnaces/heaters.)
  • Salvie's avatar
    Salvie
    Explorer
    Jul 21, 2015
    Would it control the fuel pump for the fueling station?

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