Headlight problem

Tiny
KKELLY21B
  • MEMBER
Im pretty sure I have DRL. What is the difference between DRL and the ZRS system?
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
JAMES W.
  • MEMBER
Check the "grounds" for all 4 of your headlights to make sure they're good. A bad ground can cause 1/2 bright on the lights.
Also, were your headlights normally on when you were driving during the day?
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
KKELLY21B
  • MEMBER
Yes sir, my headlights are on normally during the day, but only my headlights. Until recently anyway. Now it's all exterior lights reguardless of the switch position. I have checked the grounds, but i'll mess with them again just to double check. Thank you for your input, and if you can think of anything else please let me know.
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
JAMES W.
  • MEMBER
Do you have the factory installed off-road package with the lift kit, oversized tires and fog lamps? This makes a difference in the wiring diagrams.
Also, if you'll give me your email address, I'll send you some PDF files on diagrams. They're much clearer on PDF.
Under the left side of the dash, on the fuse block, there is a grounding relay for the headlights. I don't have a # for it but, it has 2 light grn/blk, 1 yellow and 1 black wire going to it.
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
KKELLY21B
  • MEMBER
Yes sir, the truck is the off-road ZR2 edition but there are no fog lamps. My email address is: kyle.R. Kelly@us. Army. Mil
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
JAMES W.
  • MEMBER
OK, we're hot on the trail, email will go out as soon as I get it together.
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Monday, March 18th, 2019 AT 4:51 PM (Merged)
Tiny
DENVER R ADKINS
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Have power to headlight per relay and deleted relay under hood. Power to switch bright light indicator or delay indicator on cluster is on, but no power to headlights or marker lights etc. First off I had high beams but no low beams on either side all other lights worked. I had a dimmer switch from another s10 thought I would try it and it was junk, I put original dimmer switch back on it and that is where I am at now. No high beams or low beams and no marker lights. Checked all fuses and relays that I know of.
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Saturday, October 19th, 2019 AT 10:27 AM (Merged)
Tiny
KEN
  • ADMIN
It looks like there are two relays that run the system. I would check for power at the relay and then test the relays.

Below are some guides and some diagrams to help us get started and get the problem fixed.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please let us know what happens so we can keep helping you.

Cheers, Ken
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Saturday, October 19th, 2019 AT 10:27 AM (Merged)
Tiny
DENVER R ADKINS
  • MEMBER
We have did all the suggested above. Still no headlights
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Saturday, October 19th, 2019 AT 10:27 AM (Merged)
Tiny
TEMPERANCENISE
  • MEMBER
  • 1994 CHEVROLET S-10
  • 200,000 MILES
My low beams will not work, only the high beams work. I replaced the head lamps and that was not the problem, so what could it be.
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Connector at the high beam switch. Common for burning and corrosion.

Roy
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
M_H_RITZEL
  • EXPERT
In the fuse panel under the hood there are two fuses One for high beams and one for low beams check them they are the larger fuses on the side of the fuse box
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
GYPSY81165
  • MEMBER
  • 1990 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 76,000 MILES
I discovered that I have no tail lights or side marker lights. The brake and turn signals work. I checked the fuses and they are good. There is power going to the bulbs so I replaced one bulb to see if it worked and it didn't. The kid that owned the truck had a toggle switch for a subwoofer and when the truck was sold he took out the switch. The switch was located above the headlight/parking/dimmer switch. I looked behind the switch and it does not appear that he spliced into the wires. After I looked at the wires I turned on the parking lights and the tail lights worked and the drivers side marker and the right hand turn signal stays on in the dashboard and that is the tail light I replaced. Now if I turn on the head lights they all go out I am back to just having brake lights, headlights and turn signals. Any suggestions?
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
ZACKMAN
  • MEMBER
Try this. Remove the headlight/park/dimmer switch from the dash and unplug the connector. Check the connector for possible signs of damage, burn mark, or frayed/cut wires. Do the same thing on the switch side.

Swap front side marker/turn lamps left to right. Plug the connector and the switch socket back together, and try turning on your taillight. And then, turn on the headlight. Check operations, all four sides. Then turn on your headlamps. Re-check operations.

If you have the same problem, you may have a bad headlamp/park/dimmer switch.
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
GYPSY81165
  • MEMBER
I will try this and let you know. Thanks for the reply
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
ZACKMAN
  • MEMBER
No problem.
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
GYPSY81165
  • MEMBER
Ok I replaced the dimmer switch and headlight/parking switch. Replaced the lower front marker and both tail lights. All are working even the plate light. The only thing not working is the dashboard lights but I'm not worried about that. I don't need that to pass inspection in the future.

Thanks for all of your help.
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Saturday, October 19th, 2019 AT 10:28 AM (Merged)
Tiny
ZACKMAN
  • MEMBER
That is probably your fuse. Check this one.


http://www.2carpros.com/forum/automotive_pictures/55316_90s10fuse_1.jpg

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Saturday, October 19th, 2019 AT 10:28 AM (Merged)

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