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09-26-2011, 05:45 PM
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#1 |
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Registered User
Join Date: Jul 2008
Location: sayreville nj
Posts: 1,072
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what would cause headlights not work...high beams work.
hello.
quick question. wondering what might cause headlights not to work. highbeams work. but headlights dont. not my truck but truck im going to look at. thanks for any ideas. |
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09-26-2011, 05:53 PM
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#2 |
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Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: what would cause headlights not work...high beams work.
Dimmer switch would be the first thing to check out.
__________________
John 82 Chevy Silverado 350ci/TH350 
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09-27-2011, 12:48 PM
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#3 |
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Registered User
Join Date: Sep 2009
Location: outside atlanta
Posts: 156
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Re: what would cause headlights not work...high beams work.
low beam filament burned out
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officer,we weren't racing.. he was merely pacing me. |
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09-27-2011, 03:10 PM
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#4 |
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house of chevy's
Join Date: May 2010
Location: New milford, CT
Posts: 583
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Re: what would cause headlights not work...high beams work.
I know on my 81 c10 when my floor dimmer switch went thats what happened to me
Posted via Mobile Device
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1987 m1028 cucv d30  2001 chevy s10 2000 honda shadow sabre 1100 "it's going to be an interesting ride home" 
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09-27-2011, 03:10 PM
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#5 |
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Registered User
Join Date: May 2011
Location: Bradford, PA
Posts: 395
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Re: what would cause headlights not work...high beams work.
+1 on low beam filament burnt out. Had the same problem with my truck, replaced headlights and the problem was solved.
Good luck
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1981
K10 Scottsdale305 ci | TH350 | NP208 | 60k miles |
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09-27-2011, 04:24 PM
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#6 |
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Registered User
Join Date: Feb 2011
Location: Gainesville, FL
Posts: 406
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Re: what would cause headlights not work...high beams work.
I don't know how these trucks are wired, but on some vehicles the low beams go through a relay and the high beams do not. If the low beams bulbs are known to be good I would investigate or change the relay.
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Randy Summers Never brake in the learning curve! 1984 GMC Sierra project truck http://67-72chevytrucks.com/vboard/s...d.php?t=446737 Last edited by sumran; 09-28-2011 at 07:38 AM. |
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09-28-2011, 07:09 AM
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#7 |
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Registered User
Join Date: Dec 2008
Location: Foristell, MO
Posts: 418
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Re: what would cause headlights not work...high beams work.
x2 on dimmer switch
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09-28-2011, 08:51 AM
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#8 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,345
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Re: what would cause headlights not work...high beams work.
i would take out one of the headlights then check the circut with a tester and see if there is power.. if there is no power to the low beams then id go to the dimmer switch
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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09-28-2011, 09:01 AM
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#9 |
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C35 Crew Dually
Join Date: Nov 2008
Location: Belleville Ontario
Posts: 1,116
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Re: what would cause headlights not work...high beams work.
check the plug on the back of the light some times they just need to be wiggles or cleaned to make a better connection. (dosnt cost anyhting and it's free) worth a shot.
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If it aint square, I don't care. 84 C35 CC Dually Project log... http://67-72chevytrucks.com/vboard/s...d.php?t=414892 |
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09-28-2011, 12:12 PM
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#10 |
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Registered User
Join Date: Aug 2005
Location: Mid MI
Posts: 67
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Re: what would cause headlights not work...high beams work.
Dimmer switch cured my issue.
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09-28-2011, 07:08 PM
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#11 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: what would cause headlights not work...high beams work.
Dimmer switch. I have always kept a spare in the glove box for any GM vehicle with the floor mounted swtich. Seems like a once in a lifetime thing, but it has happened to me at least 3 times.....one rather traumatic.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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09-28-2011, 11:25 PM
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#12 |
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Registered User
Join Date: Mar 2004
Location: Dayton, Ohio
Posts: 122
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Re: what would cause headlights not work...high beams work.
+whatever on the dimmer, lol
Every old GM I've had in my family seems to have gone through this issue.
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"Locomotion" - 1982 C10 LWB 6.2 to 6.5 HUMVEE non turbo swap complete Pop's Garage Photography - Dayton, Ohio My Truck Build Page |
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09-29-2011, 09:07 PM
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#13 |
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Registered User
Join Date: Aug 2011
Location: Rockport, Tx.
Posts: 79
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Re: what would cause headlights not work...high beams work.
+1 on low beam element
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09-30-2011, 06:04 AM
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#14 | ||
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: what would cause headlights not work...high beams work.
Quote:
Not impossible, not likely either
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right.
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09-30-2011, 07:38 AM
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#15 |
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Registered User
Join Date: Aug 2011
Location: Rockport, Tx.
Posts: 79
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Re: what would cause headlights not work...high beams work.
Of course you're right---but since he said he was going to LOOK at it, it's possible that low beams failed 1 at a time, and now both are out---surely you've driven down the road and observed folks driving with 1 headlight....
That's what I was thinking as a possibility... hard to tell without actually talking to someone and not getting all the facts, what's been checked, etc. |
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02-18-2015, 01:10 PM
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#16 |
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Registered User
Join Date: Aug 2013
Location: Lake George, NY
Posts: 30
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Re: what would cause headlights not work...high beams work.
I just went through this. The headlight switch, dimmer switch and turn signal switch were all replaced and still no headlights. It turned out to be the RED wire that goes to the headlight switch. When the connector was attached the wire would push out a littleand not make contact. The tab was bent up with a small screw driver and the wire was reinserted into the connector. All of the lights work fine now. Hope this helps.
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02-18-2015, 02:49 PM
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#17 |
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Registered User
Join Date: Oct 2014
Location: Spearfish South Dakota
Posts: 407
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Re: what would cause headlights not work...high beams work.
My bosses wifes car high beames went out they fooled thing weeks it wa 1 high beam burnt out no on noticed till the other burnt out.
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