There is no "relay" per se for the headlights. The switch doesn't actually switch power to the headlights. It's only a signal to the body control module (BCM). When the BCM receives a signal from the headlight switch, it switches power to the headlights. There is no mechanical relay in this system. Headlight switch is a fairly high failure item on Chrysler products, so the first thing you want to do is use a scan tool to see if the BCM is actually getting the command to turn on the headlights. If it is, then you've either got a bad BCM or a wiring issue from the BCM to the headlights.
SOURCE: 2001 subaru outback headlight not working
chapmnfarm: your head lights use a "2" fuse system.
one for the left and one for the right.
The fuse box you are looking for is under the hood on the passenger's side. It is a black box roughly 8 inches long and 4-5 inches wide. When you remove the cover, you will see fuses and relays. What you are looking for is the section in the box which has a cluster of 7 fuses. 3 in one row and 4 in the other. On the outer parameter are two relays. The fuses you are interested in are located in the row of 4 fuses, with the two closest to the "L" shaped part of the box. Both of those should be 15 amp fuses.
The fuse below those should be a 20 amp which is the lighting switch and the one below it is a 15 amp which is for the interior lights and the clock.
Check your harness grounds in the engine compartment near the area you have the problem. There are ground wires which come out of the harness on both sides of the core support. The wires are black in color and have "EYES" crimped onto the ends of the wires. Both of them will probably be located about 4-6 inches below the upper tie bar on each side of the radiator. Odds are that the eyes will be large enough to pass a 6mm bolt through.
I hope what I have given you will resolve your problem. Lem me know,,good luck>>>>>>>>>>>>>>>
SOURCE: 2005 Jeep Liberty Sport. Headlights. Passenger Side is dim
TEST
remove both bulbs from the lamps but leave them on their wires switch
on and see if the bulbs are still different brightness if not they the
passenger side lamp housing has damaged mirror is dirty or missalined and needs adjustment. if they are
different brightness then this may be a earthing problem.
SOURCE: my passenger side low beam headlight wont work
what kinda car? doubt its a relay probably bad wire
voltage check wires
SOURCE: on a 2005 Jeep Liberty, the passenger headlight
there is a ground wire for both sides. follow the wire from the connector to body and clean, Test the 12 volt wire to make sure it has 12 volts. If not bad switch or bad wire or contact in the connector. Wiggle the connector first with the lights on to see if it changes.
SOURCE: headlight come on , replace dimmer bulb but light
it sounds as though there is a loose connection on the passenger side. Check socket and switch bulbs from driver and passenger side. hope this helps tim
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