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

Tail lights

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Old Nov 21, 2016 | 04:05 PM
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Default Tail lights

I have an issue with my rear park lights. The brake, turn, and reverse are working fine.
The park lights are not working. This morning my right rear was not working. I tried some bulbs I had laying around and they didn't work. So I grabbed the left rear one that was working, and put it in the right and it did not work. I put it back into the left and now that doesn't work. I went to the parts store and got new bulbs, put new ones in on the tail and the sides and they still don't work.
I can't find a fuse that is bad and there is no spot marked for park, the only taillight fuse I found markings for are reverse and stop.
I have a long road trip on Wednesday and now I'm panicked since most of it is going to be in the dark and I don't want the po po pulling me over.
The wiring is all in really good shape. I know jags are prone for wiring issues, but there has to be something easy I can do.
Can someone please give me the magic fix, and where the fuse is or what it is marked as.
Thank you all.
 
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Old Nov 21, 2016 | 08:00 PM
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Um, why do you need park lights? I have Never found a need for them Ever in my life! All they do is run the battery down.

If it's dark (or even if it's not) I turn on headlights, and you say tail and stop lights work fine. Why would you be pulled over for no park lights, when presumably you can't be pulled over if you're Parked? And if you're already Parked your lights are Off.

I'm only trying to understand the real problem.
(';')
 
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Old Nov 21, 2016 | 08:04 PM
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Park light are what you call the tail lights that are on when your
headlights are on. I know it's a stupid name but it is. Driving lights.
Tail lights. Whatever you want to call them. They are the only ones that
are on when your headlights are on. The 2nd down from the top.
 
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Old Nov 21, 2016 | 08:17 PM
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OK, I see.
Try vigorously rubbing a pencil eraser on the + contact in the center (fine abrasive cleaning) blowing out the eraser crumbs, and then jiggle a new bulb around to make a good contact on the bayonets. We used to have to do that with one of the older truck's tail lights.

If that works, take the bulbs out and slather the bases with Vaseline to keep future water out and thus stop that white crust that forms in the sockets.
(';')
 
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Old Nov 21, 2016 | 08:20 PM
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Thank you, but I did try that already. Where is the fuse? Does anyone know that?
 
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Old Nov 21, 2016 | 08:30 PM
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Originally Posted by amaezing
Thank you, but I did try that already. Where is the fuse? Does anyone know that?
The fuses for the tail lights are on the forward bulkhead of the trunk/boot, behind the trim panel, near the ECU

Cheers
DD
 
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Old Nov 21, 2016 | 08:33 PM
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Thank you Doug. If I am reading this write, it's in the trunk (boot) behind the panel that is behind the back seat. Do I have that right?
 
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Old Nov 21, 2016 | 08:33 PM
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This might help

Parking/Marker Lamp Circuit Checklist


Cheers
DD
 
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Old Nov 21, 2016 | 08:40 PM
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You are da man Doug. Thank you thank you.
Mirek
 
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Old Nov 22, 2016 | 09:58 AM
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Ideas:


1. Long shot. ignition must be on before head lights and "TAIL LIGHTS" will light up???


2. You need either a VOM or test lam[ for this. Latter would be my choice. Switch on. + prod to the center of the socket. - prod to the side or nearby tin. Continuity + or lamp lights. If no, issue lies upstream .


3. My WAG if no, would be the bad bulb sensor behind the front trim panel in the boot.


Carl
 
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Old Nov 23, 2016 | 05:57 AM
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Doug was correct. Got the blown fuses changed and all fixed.
 
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