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I have no power to headlights

I have power to the running lights and blinkers but no power to headlights

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  • jason allen Jan 21, 2013

    2003 dodge ram 2500 i have power to running lights, blinkers, tail lights but have no power to head ligts

  •  Stephen
    Stephen Jan 22, 2013

    On your model the headlight switch gets power from a 30amp fuse number 15 in the box. Power then goes thru the dimmer switch from the headlight switch. The other lights are on other circuits.

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  • Cars & Trucks Master
  • 21,873 Answers

You don't give the make model and year, but some cars have a circuit breaker built into the headlight switch.

Posted on Jan 21, 2013

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Posted on Jan 02, 2017

  • 122 Answers

SOURCE: Have light / blinker issue:

Sounds like wrong bulbs in some sockets

Posted on Feb 22, 2010

dttech
  • 4803 Answers

SOURCE: I need to know which fuse for headlights? Blinkers

The headlamps are powered by a 20Amp self-resetting circuit breaker in the fuse panel. If this breaker is not clicking on and off, you most likely have a bad Turn/Hazzard/Headlamp Switch. The switch that you must buy depends on if your car is equipped with Cruise Control and/or Daytime Running Lights. Also check the connector that plugs into the switch because they sometimes burn. If you plug a burnt connector into a new switch it may work for few days, but it will burn the new switch.

Posted on Jan 24, 2011

  • 158 Answers

SOURCE: 2007 Jeep Grand Cherokee..tail ligts

mporteous, It sounds like you have a light switch problem. I can't think of any other reason for the running lights and tail lights not working in this situation. Are your brake lights working when the headlights are off and how about when they are on? Do your four ways hazard lights work in these situations? Try all the lights under these conditions. The reason the left turn signal blinks very fast is because one of the bulbs are burned out. Try the left signal and one light (front or back) will stay on and the other will not come on at all. Replace the bulb that does nothing. Do this before you try all the lights in different situations. I think that you will have to replace the light switch. Good luck with this.

Posted on May 19, 2011

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1 Answer

Have a 2007 ford f150 blinkers and 4 ways work fine untill headlights turned on then blinkers stay light but not blinking


Could be the turn singal relay not getting the correct power when lights engaged. Take out bulb from headlight and then turn on headlights. Now no power to the headlights. Try to turn on blinkers now. If they blink replace signal relay, if they still are solid it may be your flasher. Just a guess without looking. Thanks.

Sep 04, 2014 | Ford F-150 Cars & Trucks

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No power to right side (PS) headlight low beam plug socket, new bulb, fuse is good. High beam works, blinker works, park light works. just no low beam and doesn't register any voltage on volt meter.


check low beam fuse when switched on if it has voltage registering across the fuse ,if there is voltage across the low beam RHS fuse then it is possibly a pinched wire from the headlight running back towards inside of the car

Jan 30, 2014 | Cars & Trucks

1 Answer

I have no brake lights, the blinkers run really fast and if the headlights are on the blinkers will not run at all while braking. Any ideas?


Have the multi-function switch and its circuits tested. The multi function switch is the blinker arm and the components its attached to in the steering wheel column. The multifunction switch has to do with blinkers, cruise control, wipers, wiper spray, high beams and also tied in with headlight dimmers/daytime running lights(if applicable) and hazards usually.

A good place to start.

Apr 26, 2010 | 2001 Chevrolet Silverado 2500HD

1 Answer

Driver's side rear blinker light stays on w/headlights on


no year compass stated, so will do 1st year.
USA/ Car?? (we are USA forum so answers default to bingo us)
engine runs ok, all else runs OK> just lamps problems?
Just is very important word in the electric world.
Drivers ok? too. (engine cranks, runs and stays running?) (turns on many meal all that)
gen1 is 2006 to 2016, later is GEN2.
ill pick first years.
seems headlights/binkers (turns sigs) are shorted together or parks.
Park/(aka, tails) may be in the mix.

1: fuses check ok
2: battery fully charged, reads 12.6v key off rested, and 13.3 to 15vdc running,
3: check for wiring damage behind lamps on the effected sides.
and for trailer hitch from H3LL hacks. there? looking is first.
collision damage by other owners, is possible (if 2nd owner you)
now electrics have a chance to perform. good power.
This system is all networked now.. needs to be understood
the first step now is to SCAN it. that's right, what if the communications bus, cant all talking between modules.
those lamps are all run by a computer under the hood
called TIPM , the module insides is called the "electronics module. EM"
it has 4 blinker wires as an output. (not shared a key fact for diagnoses)

you said driver side blinker (left works better)
drivers in UK are on right.
the left side front and rear. my guess , NO not rear)
if true the problem is there, left front blinker.
wire damage there, even the LAMP it self can short, (get new one?)
blinker,
damage at TIPM , can be possible look there yet.
its just a computer and has transistor drivers. to lamps
and if it told to do something, and is told correctly(scans)
then its bad or its output wires are shorted.
try a new lamp ?

Refr. page 50 in the SM ( MK jeep service manual, SM)
and 52.(turns)

the 4 head lamp wires(power) all are seperate at the EM
not parallel at all. independent, x4
and last the park lamps are independant on the EM
that means if the lamps are good and wires good then the EM
is faulting.
or its getting wrong commands, on the CAN-BUSS network
now you know how it works,
better is get the SM and read, it covers ALL this, in vivid details.

Mar 27, 2017 | Jeep Compass Cars & Trucks

2 Answers

Fast Blinker


Usually a fast turn signal means that there is a light out. You should probably check all of your lights, including back-up lights, and turn signals. If there is one out then replacing the burnt out bulb should fix the problem.

May 10, 2017 | 1997 Jeep Grand Cherokee

1 Answer

1987 nissan 300zx headlights taillights


try checking the headlamp sensor mounted on rt front apron behind relay box . this runs all lights .

Nov 09, 2008 | 1987 Nissan 300ZX

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