No Low Beams - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Shawn340 · 12-22-2003, 01:37 AM

Hey guys I all of the sudden lost my low beam headlights. My high beams work fine any suggestions I already tried HL switch on dash and floor. I have a 83 Fullsize Blazer. Any help would be appreciated

apstguy · 12-22-2003, 02:36 AM

Try bypassing the headlight switch and hooking the low beams up to 12v and see if they work. If they do, than it is the switch. If they don't, then it is the wiring somewhere.

**old Rusty C10** · 12-22-2003, 05:38 PM

also try jiggling the connection to the bulb i had one of them go bad on me crud on the contact but in all likelihood its the switch

Grim Reaper · 12-22-2003, 05:47 PM

Double check the bulbs.

Headlights go out about the same time. Whenever I have one burn out I replace both. You probably had one recently burned out low and the other one went as well.
The fact that you get high beams and then nothing tell you the switch has power and it probably good. You have ground so unless the low beam power lead got cut somehow your left with bad bulbs or bad switch.

We had one guy at CK5 chaising his tail with the same complaint. Kept telling him to check the bulbs. Guy said I checked and they were fine a week ago...No way both could burn out that close to eachother. So after a week of ripping out his hair he finnaly checked the bulb....Yep, both out.

Shawn340 · 12-24-2003, 11:33 PM

Thanks alot everybody for the suggestions.I went out and checked the wiring and I have power going to the low beams so it must be the lights themself. I picked up a set and I'll put them in tomorrow. Thanks again everybody and Merry Christmas

12-22-2003, 01:37 AM	#1
Shawn340 Registered User Join Date: Jan 2003 Location: PA Posts: 22	No Low Beams Hey guys I all of the sudden lost my low beam headlights. My high beams work fine any suggestions I already tried HL switch on dash and floor. I have a 83 Fullsize Blazer. Any help would be appreciated

12-22-2003, 02:36 AM	#2
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Try bypassing the headlight switch and hooking the low beams up to 12v and see if they work. If they do, than it is the switch. If they don't, then it is the wiring somewhere. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

12-22-2003, 05:38 PM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	also try jiggling the connection to the bulb i had one of them go bad on me crud on the contact but in all likelihood its the switch __________________ 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!!

12-22-2003, 05:47 PM	#4
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Double check the bulbs. Headlights go out about the same time. Whenever I have one burn out I replace both. You probably had one recently burned out low and the other one went as well. The fact that you get high beams and then nothing tell you the switch has power and it probably good. You have ground so unless the low beam power lead got cut somehow your left with bad bulbs or bad switch. We had one guy at CK5 chaising his tail with the same complaint. Kept telling him to check the bulbs. Guy said I checked and they were fine a week ago...No way both could burn out that close to eachother. So after a week of ripping out his hair he finnaly checked the bulb....Yep, both out. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

12-24-2003, 11:33 PM	#5
Shawn340 Registered User Join Date: Jan 2003 Location: PA Posts: 22	Thanks everybody Thanks alot everybody for the suggestions.I went out and checked the wiring and I have power going to the low beams so it must be the lights themself. I picked up a set and I'll put them in tomorrow. Thanks again everybody and Merry Christmas



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