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Topic: Passenger low beam headlight

in Forum: C3 Electrical


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Passenger low beam headlight (1/5)
 4/28/23 10:18pm
Vette25yrs
Former Member

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Vette(s):
1978 Silver Anniversary Yellow Corvette


Joined: 12/13/2022
Posts: 3

So last week my passenger low beam was not as bright as the other side. I jiggled it to see if I had a bad connection. I turned on the high beams and it went out entirely. I just bought the light back in February. I used my multimeter to check the light and to check to see if there was any power to the passenger headlight connection. I got nothing. My question is where do I start looking to find the culprit 

 



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Re: Passenger low beam headlight (2/5)
 4/29/23 12:05pm
eboLifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker


Joined: 6/3/2008
Posts: 4420

If you think the bulb is good, check the main connector on fender top drivers side. Make sure it's clean and tight.

 



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LIFETIME MEMBER 151
Evil Smileebo
Re: Passenger low beam headlight (3/5)
 4/30/23 11:53am
Vette25yrs
Former Member

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Vette(s):
1978 Silver Anniversary Yellow Corvette


Joined: 12/13/2022
Posts: 3

If I understand you correctly it’s located on the top side against the firewall? I checked this cluster of wires. It looks normal. I am going to remove some of the obstructions and investigate further thanks.



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Re: Passenger low beam headlight (4/5)
 4/30/23 8:55pm
sdinino
Standard Member
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Rock Hill, SC - USA

Vette(s):
1977 White/Red


Joined: 8/2/2017
Posts: 59

The first thing I’d try is swapping the low beam bulbs with each other. If the problem follows the bulb, that’s your culprit. 

While you’re swapping bulbs, look at the plugs and see if there’s corrosion. That’s a possible source of trouble.

If the problem stays on that side regardless of which bulb is in there, I’d start examining the connector and wires from the headlight and working back. A probe like a safety pin that you can poke into a wire to check voltage without cutting it is useful. 



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Re: Passenger low beam headlight (5/5)
 5/3/23 5:35pm
Steevo
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San Diego, CA - USA

Vette(s):
'73 L48 Coupe, 383, M20, A/C, Electric Windows. Matterhorn White Jet-Glo w/ Dark Blue interior. Rochester, Edelbrock, Blackjack Ceramics, Borlas w/ 2.5" mandrel X over, Cooper Cobras on both OEM Steel and Aluminum Wheels.


Joined: 11/10/2013
Posts: 51

I had a similar problem too. It was the bulb. R&R'd with a new one and All Was Well.   ???

Best of luck.

Steve



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