Passenger side headlights not working.
Thread Starter
Teching In
Joined: Dec 2022
Posts: 30
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From: Arkansas
Passenger side headlights not working. Headed home last night my passenger side lights quit working. It happened to just my low beams awhile back and all it ended up being was a loose wire from when I swapped them to LEDS. Any ideas where I should start trying to track it down? I've played with the switch some and check a few fuses but nothing so far.
Joined: Nov 2003
Posts: 11,328
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From: Jacksonville, FL (originally from Toronto Canada)
Are both the low beams and high beams out? If it's just one or the other then the bulb is the first suspect. I know that LED bulbs don't burn out as often as incandescent or halogen, but they do sometimes fail. The easiest way to check is to swap the bulbs between left and right headlights and see if the outage moves to the other side.
Do you have a test light or multimeter? The next step is to check for power and ground at the bulb socket. There are three wires at the connector... yellow = low beam power, light green = high beam power, and black = ground. There is no fuse for the headlights - they're protected by a fusible link under the hood and both sides are on the same fusible link, so that is not the problem. In fact, both sides use the same power circuit up to a splice in the harness under the hood, so finding a break in the wire would be the next check if all else fails. However, I doubt that it's a broken wire - if it's not a bulb then it's far more likely to be the connector... rusted, corroded, or worn out so that it's not making a solid connection (i.e. loose terminals). I would say that it might be the ground for that side (a screw on the top side of the radiator support) except that the same ground is used for your DRL/turn signal/parking lights and you didn't mention them not working.
Do you have a test light or multimeter? The next step is to check for power and ground at the bulb socket. There are three wires at the connector... yellow = low beam power, light green = high beam power, and black = ground. There is no fuse for the headlights - they're protected by a fusible link under the hood and both sides are on the same fusible link, so that is not the problem. In fact, both sides use the same power circuit up to a splice in the harness under the hood, so finding a break in the wire would be the next check if all else fails. However, I doubt that it's a broken wire - if it's not a bulb then it's far more likely to be the connector... rusted, corroded, or worn out so that it's not making a solid connection (i.e. loose terminals). I would say that it might be the ground for that side (a screw on the top side of the radiator support) except that the same ground is used for your DRL/turn signal/parking lights and you didn't mention them not working.
Thread Starter
Teching In
Joined: Dec 2022
Posts: 30
Likes: 3
From: Arkansas
Ok, so far you're right. Both high and low beams plus the DRL are not working however the DRL turn signal is. I checked for power and the passenger side that isn't working has power to plug sides of the bulb plug whereas the driver side doesn't. I also check the ground and it seems like it's getting a good connection. Any ideas?
Thread Starter
Teching In
Joined: Dec 2022
Posts: 30
Likes: 3
From: Arkansas
I'm not sure what changed but when I pulled the housing out to work easier they started working.i think it may be somewhere in the main plug but i Checked all the wire and everything seems tight. I'll update if it happens again.
