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Old 05-12-2018, 05:54 PM   #1
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Default Black Switch Mystery

Hi All,
I have a 1998 TowLite 24 TL.
I can't figure out for the life of me what this Black Switch controls. (please see photo)
All help graciously appreciated ...

Thx
Rick
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Old 05-12-2018, 06:38 PM   #2
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If you can, pop the switch out, use a multi meter and see if there is power at the switch. That power has to go somewhere! Might help if you can see behind it with the top lowered about a foot. Might need a mirror if it's accessible.
Under the wall mirror, your wallpaper looks as though it's gotten wet.
Also noticed your shirt, "this buds....
Tree
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Old 05-12-2018, 10:19 PM   #3
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An educated guess, due to it’s location, is the fan switch for the fridge. The fan is activated by heat build up behind the fridge. The switch allows 12v power to the fan to allow this to happen. Depending on outside temps, the fan might not come on right away. As I said, this is just a guess.

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Old 05-13-2018, 07:05 AM   #4
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Like retiredcamper, another guess. Does the SWITCH light up when you turn it on? If so, it could be the water heater. If it does light up, then you'll also need to turn on the gas supply (I light the stove to ensure flow, then turn it off). Depending on the water heater location, it may take a while to ignite as the gas has to get to it. Of course you MUST ensure you have water in the heater tank. Agaiun, this is another guess.
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Old 05-13-2018, 07:37 AM   #5
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My guess it's the fridge fan switch.
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Old 05-13-2018, 07:58 AM   #6
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Thank you all for your suggestions.
TreeClimber,
I have popped the switch out, it is a simple 12 v. rocker switch, that has the 'on' side painted red. It has continuity when turned on.
RetiredCamper47,
I was leaning towards a fridge switch, but was wondering why nothing happened when turned on. If the fridge needs to get 'warmed up' for it to come on, this would explain why nothing is happening when it is turned on.
I will turn it on when using the fridge and see if it comes on, when we are camping.
I will post my findings, for future reference ...

Thx
Rick
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Old 05-13-2018, 09:07 AM   #7
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If it's an OEM fan, you'll hear it! I think Rich and retired are correct. My fan switch is white and h2o heater is black. H2o heater switch is momentary. A red light comes on until the heater is lit.
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Old 05-13-2018, 11:35 AM   #8
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Thumbs up Mystery solved

Thanks again everyone, it is indeed the fridge fan switch.
The fan must be thermostat controlled.
Curiosity got the better of me, so, I turned the fridge on electric and let it run (the trailer is in my driveway, I suppose I could put some beer in it LOL).
It took over an hour, but the fan did run, and yes, you can hear it.
Turning the switch off, stops the fan.

Rick
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Old 05-13-2018, 01:57 PM   #9
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If that fan is too noisy (especially at night), you may want to check out the "sushidog mod". Pretty easy and cheap but QUIET!
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Old 05-17-2018, 03:26 PM   #10
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Default Black Switch

The water Pump Power?
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