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Old 01-12-2018, 05:13 PM   #1
rom
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Default Overhead light makes hot spot on the roof.

I noticed it when it started snowing but there's a hot spot on my roof where the overhead light is. the thing is, i never turn it on, it's not set to go on with the door. there's no reason it should be making a hot spot.

anyone have any ideas?
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Old 01-12-2018, 05:27 PM   #2
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It's not making a hot spot. It's because there is a different rate of heat transfer there. Air is an insulator and you have a plastic thing right there. So the air effectively stays warmer for a longer period of time there than the headliner.
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Old 01-12-2018, 09:11 PM   #3
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dvom @ the fuse and see if its using any current
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Old 01-12-2018, 09:24 PM   #4
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Replace the bulb with LED's.
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Old 01-13-2018, 12:56 AM   #5
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Quote:
Originally Posted by TestPoint View Post
Replace the bulb with LED's.
already did. i never turn it on. so....
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Old 01-13-2018, 12:57 AM   #6
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Quote:
Originally Posted by EivlEvo View Post
It's not making a hot spot. It's because there is a different rate of heat transfer there. Air is an insulator and you have a plastic thing right there. So the air effectively stays warmer for a longer period of time there than the headliner.
so everyone's 240 does this?
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Old 01-13-2018, 10:19 AM   #7
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It's a feature in every 200.
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Old 01-13-2018, 02:36 PM   #8
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Mine did it this mourning with a light cover of snow on the roof, all you need is a slight temp difference as the light is close to the sheet metal.
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Old 01-13-2018, 08:34 PM   #9
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So the light never ever ever turns on?
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Old 01-13-2018, 10:03 PM   #10
EivlEvo
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Quote:
Originally Posted by rom View Post
so everyone's 240 does this?
I'm not trying to be rude... are you new to winter?

You're basically getting something like this occurring. Thin metal has a faster heat transfer than metal with air trapped in it. So you'll get shapes like this on your hood dome light... anywhere there's trapped air.



That said, by all means check it to be sure you won't die in a fire but like... physics anat.
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