Brake lights wont work when head lights are turn on

30

Asked by Jan 23, 2014 at 01:33 PM about the 1994 Chevrolet C/K 1500 Silverado Standard Cab Stepside SB 4WD

Question type: Maintenance & Repair

I have a 1994 chevy s10 manual 5spd. i turned on my head lights yesterday and all of my
rear lights turn out my signals werent working along with my brake lights.

10 Answers

18,445

You have a bad ground.Look around the headlights first for broken, corroded or loose grounds.Then check at the back of the truck for the same.

3 out of 3 people think this is helpful.
12,115

Try just turning on the parking lights. Do they work that way? Do your emergency flashers work. This is a different circuit. Check fuses. Brake lights work with lights off? It may be in your switch connection. Corrosion, lose or shorted out wire, or as stated from uff4X4, corrosion on a ground somewhere. Electrical problems that sometimes works and some times don't are a nightmare to trouble shoot.

30

the rear lights work when the lights arent on but even turning on the parking light turns them all off. im not sure about the flashers.

3 out of 3 people think this is helpful.
12,115

It may be in your switch. If they work when the lights are off, the ground wiring is not an issue. The common connector between the front and rear lights is at the light switch. Believe it or not, the switch has been known to go bad on occasion. I hope it fixes your problem. Now if there is another connector between the routing sequence, I'm not aware of it. If it is, check if there is a fuse in the routing.

1 out of 1 people think this is helpful.
18,445

Yes it is pulling the ground from the park lights to burn the headlights.

3 out of 3 people think this is helpful.
30

it was a ground thanks!

30

Exact same problem on my 1500! What ground was it?

3 out of 3 people think this is helpful.
10

Im having this same problem could you tell me what ground it was

1 out of 1 people think this is helpful.
10

Our brake lights dont work when head lights are on. But they do when the parking lights and flashers are on.

1 out of 1 people think this is helpful.
12,115

Anna, look at the answers above. Since it is electrical, and on a "DC (direct current) circuit, you have a wire carrying the electricity to the lights, and to complete the circuit, it needs a ground wire making connection to the metal part of the car or vehicle to complete the circuit. If there is not a proper ground at the spot the lights are burning, it must travel further up the line to work. That puts a draw on the circuit and it may either not work the lights or burn out a fuse. Check the ground wires on the bulb sockets, make sure the wire is clean at the connections, and not broken. This is difficult if you are not well versed in electrical circuits. There are inexpensive equipment to test the circuits, but it take training to use it. Visual and touchy feeliy is the best starting place. The lights that go out when other lights are turned on is a good place to start.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Why wont my Tail Lights work??? 26 answers

    My 1994 chevy 1500 brake lights, head lights, front parking lights and front and rear turn signals work......TAIL LIGHTS do NOT work.....have checked fuses and bulbs.....What could the problem be???

    1994 Chevrolet C/K 1500 WT Standard Cab LB 4WD

    -

    Maintenance & Repair

  • Why wont my Tail Lights work??? 4 answers

    My 1994 chevy 1500 brake lights, head lights, front parking lights and front and rear turn signals work......TAIL LIGHTS do NOT work.....have checked fuses and bulbs.....What could the problem be???

    1994 Chevrolet C/K 1500 WT Standard Cab LB 4WD

    -

    Maintenance & Repair

  • brake lights not working on my 1998 chevy 1500 3 answers

    running lights blinkers 3rd brake light works just my tailgate brake lights are not working

    1998 Chevrolet C/K 1500 Cheyenne Extended Cab LB

    -

    Maintenance & Repair

  • brake lights will not work at all 1 answer

    I have replaced the boards that the bulbs go in and checked all the fuses while this did fix my tail and turn signal problem in the rear i still have no brake lights and my brake indicator on the da...

    Chevrolet C/K 1500

    -

    Maintenance & Repair

  • lights 1 answer

    When i use my left blinker it lights up solid (wont flash ) with head light switch on but when i turn the headlight switch off everything blinks with the left blinker,the dash lights running lights...

    1997 Chevrolet C/K 1500 WT Standard Cab SB

    -

    General

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 1,068 nationwide C/K 1500 listings starting at $4,599.

ZIP:

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 3,030
#2 John Saffrahn
John Saffrahn
Reputation 2,410
#3 Rowefast
Rowefast
Reputation 1,560
View All

Related Models For Sale

Used GMC Sierra 1500
927 Great Deals out of 62,271 listings starting at $1,395
Used Ford F-150
2,880 Great Deals out of 212,656 listings starting at $1,000
Used Chevrolet C/K 2500
241 listings starting at $5,500
Used Dodge Ram 1500
536 Great Deals out of 12,998 listings starting at $2,199
Used Chevrolet C/K 3500
274 listings starting at $6,999
Used Chevrolet Tahoe
808 Great Deals out of 28,674 listings starting at $1,500
Used Chevrolet Camaro
309 Great Deals out of 38,867 listings starting at $1,250
Used Chevrolet S-10
14 Great Deals out of 1,662 listings starting at $1,995
Used Toyota Tacoma
620 Great Deals out of 35,082 listings starting at $2,155