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-   -   Overhead light makes hot spot on the roof. (https://forums.tbforums.com/showthread.php?t=338928)

rom 01-12-2018 05:13 PM

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?

EivlEvo 01-12-2018 05:27 PM

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.

esmth 01-12-2018 09:11 PM

dvom @ the fuse and see if its using any current

TestPoint 01-12-2018 09:24 PM

Replace the bulb with LED's.

rom 01-13-2018 12:56 AM

Quote:

Originally Posted by TestPoint (Post 5732965)
Replace the bulb with LED's.

already did. i never turn it on. so....

rom 01-13-2018 12:57 AM

Quote:

Originally Posted by EivlEvo (Post 5732850)
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?

Lankku 01-13-2018 10:19 AM

It's a feature in every 200.

283SD 01-13-2018 02:36 PM

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.

doucheNozzle 01-13-2018 08:34 PM

So the light never ever ever turns on?

EivlEvo 01-13-2018 10:03 PM

Quote:

Originally Posted by rom (Post 5733054)
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.

http://img.tapatalk.com/d/12/12/30/ysunatu5.jpg

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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