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Old Mar 20, 2011 | 09:50 PM
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Default underhood light question

I understand that the underhood lamp will go out after 10-15 minutes thanks to the battery run-down protection, but is the lamp supposed go out immediately after the hood is closed or does it still remain lit for 10-15 minutes?
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Old Mar 20, 2011 | 09:55 PM
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It goes out when you close the hood. It has an internal switch like most GM underhood lamps.
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Old Mar 20, 2011 | 09:56 PM
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Old Mar 20, 2011 | 10:17 PM
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Originally Posted by Tangl
It goes out when you close the hood. It has an internal switch like most GM underhood lamps.
For sure! Your cabin lightswill go out too after 10 or so minutes if the doors are open.
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Old Mar 20, 2011 | 10:52 PM
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It goes out as soon as the hood is lowered down.
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Old Mar 20, 2011 | 11:09 PM
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If it times out and you still need it on,close the hood about 2/3 of the way down,and raise it again,and the light will come on for another 10 minutes or so.
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Old Mar 20, 2011 | 11:12 PM
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first thing i unhooked.
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Old Mar 20, 2011 | 11:14 PM
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Mine no worky. Bulb and fuse are good but no light. Anything I should check?
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Old Mar 20, 2011 | 11:27 PM
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Check the plug (follow the wires that come out of the hood)
If it gets corroded or loose (or"unhooked" like some people do) that could be your problem.

The load monitored circuit on that little light makes it a lot more complicated than it needs to be,IMO
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Old Mar 21, 2011 | 12:17 AM
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I left the one on my 95 PU on and it had a dead battery. But it was a different type. it had a switch and was on a little cord reel. I will check that. My 2003 PU and Sky don't have them Nor dose Michelle's Malibu so I kind was not real worried about it. Would be nice to have it work though.
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Old Mar 21, 2011 | 01:53 AM
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Originally Posted by PSU 98
I understand that the underhood lamp will go out after 10-15 minutes thanks to the battery run-down protection, but is the lamp supposed go out immediately after the hood is closed or does it still remain lit for 10-15 minutes?
As above - it goes out when the hood is lowered.

Trouble is when you leave the hood open for a show.
The original bulb draws 1.1 amps - that's a fair amount to draw for 10-15 minutes. Then, open the back for an adult beverage and the cycle starts all over again!

I upgraded mine to an LED replacement.
Now...it draws 0.1 amps, and doesn't impact the battery so there's no need to disconnect or disable it!
Besides, the brighter white light of the LED makes the engine detail look great!!

Definately recommended!....

BTW - you can web search "LED FESTOON BULB" for sources. Here's one: http://www.automotivelightstore.com/...nledbulbs.aspx and I got mne from AUTOLUMINATION http://autolumination.com/.

Last edited by UR LZN; Mar 21, 2011 at 11:33 AM. Reason: update
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Old Mar 21, 2011 | 02:46 AM
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Originally Posted by imavettegirl
first thing i unhooked.

I did the same thing !

Last edited by SG Lou; Mar 21, 2011 at 02:49 AM.
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Old Mar 21, 2011 | 09:45 AM
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The light in your refrigerator goes off when you close the door too
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Old Mar 21, 2011 | 10:01 AM
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I think the underhood light works with a built in mercury switch, similar to a thermostat.Where did you guys get the led light
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Old Mar 21, 2011 | 10:03 AM
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Originally Posted by GeneT
The light in your refrigerator goes off when you close the door too



I climbed inside mine the other day to be sure.
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Old Mar 21, 2011 | 10:04 AM
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Originally Posted by imavettegirl
first thing i unhooked.


Next I disabled the Twilight sentinal on the DIC.
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Old Mar 21, 2011 | 10:40 AM
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Originally Posted by Mike98SilVert


Next I disabled the Twilight sentinal on the DIC.
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Old Mar 21, 2011 | 10:43 AM
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I kept mine unhooked as the hood was always open at shows
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Old Mar 21, 2011 | 11:34 AM
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Originally Posted by tonyb47
I think the underhood light works with a built in mercury switch, similar to a thermostat.Where did you guys get the led light
For bulb sources, see my update above....
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Old Mar 21, 2011 | 11:37 AM
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Mine has a different hood.
Not only does it fix the problem. it looks better!
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