XJ6 & XJ12 Series I, II & III 1968-1992

Headlight assistance

Old Oct 14, 2021 | 06:18 PM
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Default Headlight assistance

Greeting gents. Been awhile so I can use a refresher. Just got my whip back on the road and front headlights won’t work but the high beams do. It’s been years since I’ve worked on the car and can use a pointer as to where to start to fix this sucker . Any info greatly appreciated

scott
 
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Old Oct 14, 2021 | 06:32 PM
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Assuming the bulbs are known good.....

Clean the fuses in the headlight fuse box....the one in the engine bay. The metal end caps often corrode....as do the clips in the fuse box that hold the fuses.

Next clean the connections at the headlights themselves

Next clean the headlight grounds....which are the vertical panel on either side of the radiator, facing towards the front

Post back if problem persists

Cheers
DD
 
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Old Oct 14, 2021 | 07:29 PM
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Originally Posted by Doug
Assuming the bulbs are known good.....

Clean the fuses in the headlight fuse box....the one in the engine bay. The metal end caps often corrode....as do the clips in the fuse box that hold the fuses.

Next clean the connections at the headlights themselves

Next clean the headlight grounds....which are the vertical panel on either side of the radiator, facing towards the front

Post back if problem persists

Cheers
DD
thanks doug
 
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Old Oct 15, 2021 | 05:28 AM
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Can you tell me which fuse is which inside the fuse box on the driver side in my engine compartment ?
The fuses all look intact but I’m gonna do a full sweep and clean the connectors as you mentioned.
 

Last edited by doghead08; Oct 15, 2021 at 05:30 AM.
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Old Oct 15, 2021 | 07:14 AM
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The first fuse is for the electric cooling fan. The other four are for the headlights: #2 and #4 for the outboards and #3 and #5 for inboards...I think. Doesn't matter. Clean 'em all!

Cheers
DD
 
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Old Oct 15, 2021 | 02:35 PM
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Easy first:

I found that merely rolling the fuses in the cradles often restores the lights !!!!
 
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Old Oct 16, 2021 | 02:02 PM
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Default Cleaned connections and still not working.

I changed and cleaned the fuses/connections to the lights themselves, grounds and the relay connections. Still no juice. I feel like there I missing something-where the headlights connect together or something. If all the other lights are working I feel like I'm missing something simple but can't find where the bad connection is
 
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Old Oct 19, 2021 | 10:24 AM
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Default Found the headlight issue

The issue is loose wire under the fuse box. I'll have tl take that off and sort.

QUOTE=Doug;2453519]Assuming the bulbs are known good.....

Clean the fuses in the headlight fuse box....the one in the engine bay. The metal end caps often corrode....as do the clips in the fuse box that hold the fuses.

Next clean the connections at the headlights themselves

Next clean the headlight grounds....which are the vertical panel on either side of the radiator, facing towards the front

Post back if problem persists


Cheers
DD[/QUOTE]
found
 

Last edited by doghead08; Oct 19, 2021 at 10:25 AM. Reason: Submitted to soon
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