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Headlight Problem

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Old 01-13-2022, 07:49 AM
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Default Headlight Problem

1996 XJ Sport
When I turned on headlights this AM, all lights are working except low beam headlights.

All 40 amp fuses under hood appear good.

Flashing high beams with left stalk, high beams and high beam indicator lamp come on, go off when released, i.e., high beams don't stay on without holding stalk back.

Headlight Switch problem?
Advance Auto calls it the "Instrument Panel Dimmer Switch" https://shop.advanceautoparts.com/p/...747/12521938-P

Last edited by 318SixPack; 01-13-2022 at 08:14 AM.
Old 01-13-2022, 08:13 AM
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Or the harness?
My second or third video I found this. Doing the same thing as mine, but my light switch hasn't been touched since the factory iirc.
Old 01-13-2022, 08:17 AM
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Did you do the headlight harness upgrade?
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Old 01-13-2022, 08:19 AM
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Originally Posted by Ralph77
Did you do the headlight harness upgrade?
No, nothing in that wiring has been touched since the factory.

I noticed a mod mentioned in another thread, but haven't seen any details.
Old 01-13-2022, 01:01 PM
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Originally Posted by 318SixPack
No, nothing in that wiring has been touched since the factory.

I noticed a mod mentioned in another thread, but haven't seen any details.
I asked cause if one of those 2 relays go bad it would do something like what you are describing so.....
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Old 01-13-2022, 01:37 PM
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Originally Posted by Ralph77
I asked cause if one of those 2 relays go bad it would do something like what you are describing so.....
going to dig in when I get home and order the harness anyway because I'd rather have it wired that way than factory. If the switch looks bad I'll replace tonight
Old 01-13-2022, 04:42 PM
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This doesn't look like the carnage on YouTube


Old 01-13-2022, 06:50 PM
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Switch fixed it. BTW, CarQuest switch has the ground in a different spot.

whew
Old 01-13-2022, 07:43 PM
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I really recommend the headlight harness upgrade. Takes the load off the switch and undersized wiring. Not 100% sure about the HO, but on the Renix, the flash-to-pass is on a different circuit and fuse than the normal headlight circuit through the switch.
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Old 01-13-2022, 07:44 PM
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Originally Posted by lawsoncl
I really recommend the headlight harness upgrade. Takes the load off the switch and undersized wiring. Not 100% sure about the HO, but on the Renix, the flash-to-pass is on a different circuit and fuse than the normal headlight circuit through the switch.
switch fixed it
Already ordered the harness upgrade
Old 01-14-2022, 12:30 AM
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Originally Posted by lawsoncl
I really recommend the headlight harness upgrade. Takes the load off the switch and undersized wiring.
Most people do it for the brighter lights and the added bonus is that it takes some of the load off the factory wiring.
I did because it takes some of the load off the factory wiring and the brighter lights are just a bonus. LOL.
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Old 01-14-2022, 05:41 AM
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There is a flat rectangle connector on the driver's side wheel-well known for corrosion and high resistance since they aren't weather proof. Symptoms.. dim or non functioning header panel lights, turn signals malfunction. Clean it or eliminate it. But glad you found the bigger problem
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Old 01-14-2022, 06:00 AM
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Originally Posted by JeepingDan
There is a flat rectangle connector on the driver's side wheel-well known for corrosion and high resistance since they aren't weather proof. Symptoms.. dim or non functioning header panel lights, turn signals malfunction. Clean it or eliminate it. But glad you found the bigger problem
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Old 01-14-2022, 07:18 AM
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Originally Posted by JeepingDan
There is a flat rectangle connector on the driver's side wheel-well known for corrosion and high resistance since they aren't weather proof. Symptoms.. dim or non functioning header panel lights, turn signals malfunction. Clean it or eliminate it. But glad you found the bigger problem
Will look for that when I reassemble the dash. It's just in with a couple screws right now.
Old 01-14-2022, 07:20 AM
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Originally Posted by 318SixPack
Will look for that when I reassemble the dash. It's just in with a couple screws right now.
It's behind the left headlight and in front of the air cleaner......
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