Underhood lights not working
Thread Starter
Racer
Joined: Aug 2009
Posts: 457
Likes: 149
From: Katy, TX
Underhood lights not working
My underhood lights aren't working. I figured it was the bulbs so i bought 2 and nothing. I can't find a switch for them. What fuse is it? Any other ideas why they woudn't work?
Safety Car
Joined: Jan 2008
Posts: 3,939
Likes: 1
From: Vero Beach Florida
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
It could be that the wires for the lights are not connected. Look in the headlamp wells next to the cornering lamp housings. The harness from each of the underhood lamps travel downward to the housings and there is a 2-wire Weatherpak connector near the housings. Check to see if they have been disconnected there. That's pretty common to do if the hood is left up for extended periods.
The mercury switches are at the bottom of the clip that holds the bulbs. For the most part these don't fail but somebody could have removed them.
The mercury switches are at the bottom of the clip that holds the bulbs. For the most part these don't fail but somebody could have removed them.
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
What the guys above said.
There should be power to the housings at all times. The mercury switches are inside next to the bulbs. When the hood tilts, the mercury moves and completes the circuit. Test first for 12V to the housing. If no power there, check down in the front fender wells and see if someone has unplugged them. I leave mine unplugged when working on the car for more than a few minutes so they don't drain the battery. A previous owner may have just unplugged them.
There should be power to the housings at all times. The mercury switches are inside next to the bulbs. When the hood tilts, the mercury moves and completes the circuit. Test first for 12V to the housing. If no power there, check down in the front fender wells and see if someone has unplugged them. I leave mine unplugged when working on the car for more than a few minutes so they don't drain the battery. A previous owner may have just unplugged them.
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