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Old 09-03-2020, 09:18 PM   #1
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Black momentary switch

My 2002 Itasca Horizon has a small, unmarked black momentary switch in the far upper right area of the dash panel.i do not know what it is for, I've switched it several times but nothing happens, as far as I can tell.
Can someone give me directions for what it is?
Thanks
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Old 09-03-2020, 09:32 PM   #2
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Originally Posted by Bill Myers View Post
My 2002 Itasca Horizon has a small, unmarked black momentary switch in the far upper right area of the dash panel.i do not know what it is for, I've switched it several times but nothing happens, as far as I can tell.
Can someone give me directions for what it is?
Thanks
BIG GUESS...could it be the switch that jumps the starter battery from the coach batteries when needed?
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Old 09-04-2020, 06:55 AM   #3
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It is your Aux Start Switch according to your wiring diagram. As Wyatt said, it momentarily connects your house batteries to your chassis batteries to help start your engine if your starting batteries are low.

Here’s a link to your wiring diagram for a 2002 Horizon.

http://www.winnebagoind.com/diagram/...ire_138561.pdf

And here’s the dash layout on that side of your dash:
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Old 09-04-2020, 07:24 AM   #4
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I'm guessing it might be the radio switch as one that would be hard to tell what happened as it only switches the radio power from the chassis/start battery to the coach battery and that is real noticable!
Not noticed unless we use the radio long enough to run the start battery down while camping and then we get to use that other button mentioned to jump start to get the engine to crank.
Maybe they should put them together off to the side as a pair so that if we leave the first in the wrong position , we get to use the next one!!!
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Old 09-05-2020, 07:13 AM   #5
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Thanks for all the comments, but I discovered the switch is the trip odometer reset switch!
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Old 09-05-2020, 10:51 AM   #6
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Thanks for all the comments, but I discovered the switch is the trip odometer reset switch!
That’s almost hilarious. If you come across another errant switch, at least you’ll have an idea what THAT one might do.

Probably best to post a picture next time. That would have certainly sped up the diagnosis...
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Old 09-05-2020, 12:36 PM   #7
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😁 😳 ☺
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Old 09-09-2020, 05:26 PM   #8
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Could be for the map light on that side of the rig .
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Old 09-09-2020, 06:09 PM   #9
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This communications stuff is harder than most of us think! what seems upper right dash for one is different for another. Sometimes we even get confused with pictures, but no harm done.
We all need a little entertainment!!
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Old 09-09-2020, 06:14 PM   #10
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Turns out it is the speedometer trip display/reset switch~
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Old 09-09-2020, 10:41 PM   #11
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And the nob to the upper left of the on the dash panel is to dim or brighten your dash display lights, like you'd twist your light switch on an old car. If you twist your light switch in your mh you will turn on the drivers map light behind your head.
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Old 09-10-2020, 06:53 AM   #12
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Funny thread!
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Old 04-27-2021, 08:26 AM   #13
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Thanks ! creativepart! everyone had me searching for a "aux start switch" . turns out you just showed me it's my switch labeled " MON" . to cool! well, thats one in a thousand mysteries solved!
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