No headlight, turn, marker one side? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

elks · 05-08-2019, 05:59 PM

Quick thoughts. Have not had time to dig into the setup yet, but I have no headlight dim or low no marker light, no park light, no turn on the passenger side of my 72. I did look at the ground and fuzes real fast they do not seem to have any issues there, but any ideas? Everything else works as designed...

Also the headlight looks like it is in good shape and not noticeably blown. Wiggle the connector looking for an issue but nothing yet.

Will be digging an hour or so and will update with fix if I find it.

Thanks

RustyPile · 05-08-2019, 06:12 PM

Unless fuses (no "z") have been added, the headlights (hi and lo beams) don't have fuses in the circuit. They're protected by a circuit breaker built into the headlight switch.. Go with the basics first.. Check for burned out bulbs, broken wires, bad grounds.. Then break out the test equipment and trace the electrical path to each item.. When you find where the electrons aren't present, you've found the problem..

I understand that electricity is mysterious to some people, but nothing is accomplished by taking quick looks.. Dig in and use good diagnostic procedures..

OldBlue70C10 · 05-09-2019, 10:31 AM

a rusty dimmer switch was what I found wrong with my headlights. Still working on turn signals and dash lights. but thats something to check for your headlights

Minkota · 05-09-2019, 12:11 PM

is this a truck that you just acquired and the lights were not working when you got it or is this a truck you have had for a while and the lights just stopped working.

rpmerf · 05-09-2019, 12:36 PM

These MIGHT all share a ground. I would likely start with a test light from the battery ground to the socket or connector. Ensure you are getting power over there. I would think it would be odd to loose power to that location only otherwise. Right headlights out, with the left headlight still working. Front park and turn not working while the rears still work. Seems location and ground would be the common element between the non working bulbs.

demian5 · 05-09-2019, 04:44 PM

Quote:

Originally Posted by rpmerf

These MIGHT all share a ground. I would likely start with a test light from the battery ground to the socket or connector. Ensure you are getting power over there. I would think it would be odd to loose power to that location only otherwise. Right headlights out, with the left headlight still working. Front park and turn not working while the rears still work. Seems location and ground would be the common element between the non working bulbs.

X2 - Ground issue

05-08-2019, 05:59 PM	#1
elks Registered User Join Date: Mar 2009 Location: NW, Colorado Posts: 285	No headlight, turn, marker one side? Quick thoughts. Have not had time to dig into the setup yet, but I have no headlight dim or low no marker light, no park light, no turn on the passenger side of my 72. I did look at the ground and fuzes real fast they do not seem to have any issues there, but any ideas? Everything else works as designed... Also the headlight looks like it is in good shape and not noticeably blown. Wiggle the connector looking for an issue but nothing yet. Will be digging an hour or so and will update with fix if I find it. Thanks __________________ Confidence is the feeling we have before we fully comprehend the situation

05-08-2019, 06:12 PM	#2
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 1,853	Re: No headlight, turn, marker one side? Unless fuses (no "z") have been added, the headlights (hi and lo beams) don't have fuses in the circuit. They're protected by a circuit breaker built into the headlight switch.. Go with the basics first.. Check for burned out bulbs, broken wires, bad grounds.. Then break out the test equipment and trace the electrical path to each item.. When you find where the electrons aren't present, you've found the problem.. I understand that electricity is mysterious to some people, but nothing is accomplished by taking quick looks.. Dig in and use good diagnostic procedures..

05-09-2019, 10:31 AM	#3
OldBlue70C10 Registered User Join Date: Jul 2018 Location: Ozark, AL Posts: 43	Re: No headlight, turn, marker one side? a rusty dimmer switch was what I found wrong with my headlights. Still working on turn signals and dash lights. but thats something to check for your headlights

05-09-2019, 12:11 PM	#4
Minkota Registered User Join Date: Jun 2016 Location: West Palm Beach, Florida Posts: 295	Re: No headlight, turn, marker one side? is this a truck that you just acquired and the lights were not working when you got it or is this a truck you have had for a while and the lights just stopped working.

05-09-2019, 12:36 PM	#5
rpmerf Registered User Join Date: Feb 2011 Location: Parkville, MD Posts: 1,024	Re: No headlight, turn, marker one side? These MIGHT all share a ground. I would likely start with a test light from the battery ground to the socket or connector. Ensure you are getting power over there. I would think it would be odd to loose power to that location only otherwise. Right headlights out, with the left headlight still working. Front park and turn not working while the rears still work. Seems location and ground would be the common element between the non working bulbs. __________________ 1970 C20 Custom Camper - 350, TH350 1997 GMC Suburban 1994 Acura Integra GSR 1987 Dodge Daytona Shelby Z



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