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Old 09-26-2010, 02:17 PM   #1
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Lightbulb Dimmer Switch

So my dimmer switch only works when I turn the dimmer all the way up. The doors are plugged into the door switch. What is wrong

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Old 09-26-2010, 02:31 PM   #2
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Are you talking about the dimmer for the headlights, guages or the overhead lights?

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Old 09-26-2010, 06:50 PM   #3
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I've got the same problem with the dimmer switch for the gauges so I would guess he has a problem with the gauge switch.
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Old 09-26-2010, 07:04 PM   #4
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If it's an older jeep could the contacts in the switch. Mine also doesn't dim much. Today I had to pull part of dash and when I looked at the switch the Cooper contacts were piled up with guck. Had that green copper look.
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Old 09-27-2010, 04:17 PM   #5
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Yes the dimmer for the head lights. It dims an brightens the guages and turns on the dome light. But the dome light wont come on when I open the door. Check the contacts those are clean. WTH!
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Old 09-27-2010, 04:20 PM   #6
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Did you check to see if your #4 fuse has been pulled or is blown? It is often pulled to prevent the lights from staying on while riding doorless. The stem control will still work.
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Old 09-28-2010, 12:34 PM   #7
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Still good, not blown
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Old 09-28-2010, 12:42 PM   #8
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Sounds like a bad rheostat in your dimmer switch. If that is the case you'll need to replace the entire switch assembly
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Old 09-28-2010, 11:12 PM   #9
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Sounds like a bad rheostat in your dimmer switch. If that is the case you'll need to replace the entire switch assembly
ugh...
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Old 09-28-2010, 11:53 PM   #10
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Its not hard to replace. Two screws and a plug. The hard part is payin for it. I believe the correct part no. is DELCO 19953
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Old 09-29-2010, 11:48 AM   #11
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Its not hard to replace. Two screws and a plug. The hard part is payin for it. I believe the correct part no. is DELCO 19953
Dealer part only? I hope that is it. You would think if it was junk it wouldnt work at all but it does, dim and brighten the guage lights.
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Old 09-29-2010, 12:01 PM   #12
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A rheostat is basically an adjustable resistor, it is possible to have multiple "dead" spots on it and yet still have it function to a point. Maybe I am not understanding what the problem is.

In my case my dimmer switch slides from low to high and then "clicks" at the top of the high setting and activates the dome and map lights. When my dimmer went bad the gauge lights wouldn't come on until the dimmer was near the high setting (about 3/4ths the way thru the switch range) at that point they would come on and get slightly brighter once I reached the top of the switch range. I ended up getting a replacement from a salvage yard for about $5, you can probably also get them from an auto parts store for around $25 - $40.
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Old 09-29-2010, 12:20 PM   #13
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Dealer part only? I hope that is it. You would think if it was junk it wouldnt work at all but it does, dim and brighten the guage lights.
Dealer may be your best bet to find it. The Mopar part number is: 56001864
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Old 09-29-2010, 12:53 PM   #14
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Quote:
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A rheostat is basically an adjustable resistor, it is possible to have multiple "dead" spots on it and yet still have it function to a point. Maybe I am not understanding what the problem is.

In my case my dimmer switch slides from low to high and then "clicks" at the top of the high setting and activates the dome and map lights. When my dimmer went bad the gauge lights wouldn't come on until the dimmer was near the high setting (about 3/4ths the way thru the switch range) at that point they would come on and get slightly brighter once I reached the top of the switch range. I ended up getting a replacement from a salvage yard for about $5, you can probably also get them from an auto parts store for around $25 - $40.
My switch works all the way, from the very bottom where its off and to the click with dome lights on.
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Old 09-29-2010, 02:07 PM   #15
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Just so I understand... your dash lights are on when the dimmer switch is moved from low to high... are they on at a constant brightness or are they working as they should from low to high.

If they are constantly at the same brightness no matter where the switch is set then the rheostat is shorted and acting like a standard switch instead of a dimmer. If the dash lights are being adjusted in brightness with the movement of the switch then I don't see that there is a problem as that is what the switch is intended to do. As I stated earlier, maybe I am just not understanding what problem your having.
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Old 03-19-2011, 12:14 AM   #16
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Headlight Problems

Nvm

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