1985 XJS H.E. - Total Noob Electrical Question - Trunk Lights
#1
1985 XJS H.E. - Total Noob Electrical Question - Trunk Lights
Greetings!
Hate to begin my posting here with something so mundane, but I gotta start somewhere...
Can't figure out the trunk light circuit on this vehicle. Here is what I have checked:
Fuse good (all interior lights work).
Bulbs in fixtures good.
Checked switch by removing it and jumping the terminals (no effect).
Checked power to each fixture. One hot, one not on each fixture.
I can get them to light if I drop the fixtures and ground the non-hot side to the body.
Soooooooooooo, what am I missing?!?!?!?
Hate to begin my posting here with something so mundane, but I gotta start somewhere...
Can't figure out the trunk light circuit on this vehicle. Here is what I have checked:
Fuse good (all interior lights work).
Bulbs in fixtures good.
Checked switch by removing it and jumping the terminals (no effect).
Checked power to each fixture. One hot, one not on each fixture.
I can get them to light if I drop the fixtures and ground the non-hot side to the body.
Soooooooooooo, what am I missing?!?!?!?
#2
#3
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Cheers
DD
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Grant Francis (03-18-2019)
#4
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Grant Francis (03-18-2019)
#5
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Greg in France (03-18-2019)
#6
Greetings!
Hate to begin my posting here with something so mundane, but I gotta start somewhere...
Can't figure out the trunk light circuit on this vehicle. Here is what I have checked:
Fuse good (all interior lights work).
Bulbs in fixtures good.
Checked switch by removing it and jumping the terminals (no effect).
Checked power to each fixture. One hot, one not on each fixture.
I can get them to light if I drop the fixtures and ground the non-hot side to the body.
Soooooooooooo, what am I missing?!?!?!?
Hate to begin my posting here with something so mundane, but I gotta start somewhere...
Can't figure out the trunk light circuit on this vehicle. Here is what I have checked:
Fuse good (all interior lights work).
Bulbs in fixtures good.
Checked switch by removing it and jumping the terminals (no effect).
Checked power to each fixture. One hot, one not on each fixture.
I can get them to light if I drop the fixtures and ground the non-hot side to the body.
Soooooooooooo, what am I missing?!?!?!?
#7
The boot lights are on Fuse #3 in the main fuse panel which is a different fuse to the interior lights. The power antenna is on the same fuse #3.
All the lighting is switched to ground. Make sure the ground connection from the boot switch is good, I would disconnect the grounds in the boot G9 in under where the boot light switch is and clean up the terminals and car body, re-install and put some body seam sealer on the connection to stop corrosion.
All the lighting is switched to ground. Make sure the ground connection from the boot switch is good, I would disconnect the grounds in the boot G9 in under where the boot light switch is and clean up the terminals and car body, re-install and put some body seam sealer on the connection to stop corrosion.
The following users liked this post:
Greg in France (03-19-2019)
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#8
Thanks!
Thank you to all that took the time to respond. Upon further testing, I found the broken connection between the switch and the light (thanks for the tip).
Both trunk lights now functional!
My '85 XJS has the plunger type switch mounted in the upper left (if facing the open trunk) corner of the trunk lid opening, not the mercury type.
Now that I have that cleared up, I'm on to the next 17 or so electrical related faults I've found on this project so far...
DS
Both trunk lights now functional!
My '85 XJS has the plunger type switch mounted in the upper left (if facing the open trunk) corner of the trunk lid opening, not the mercury type.
Now that I have that cleared up, I'm on to the next 17 or so electrical related faults I've found on this project so far...
DS
The following 2 users liked this post by Hobejam:
Grant Francis (03-18-2019),
Greg in France (03-19-2019)
#9
Just a thought: the boot light switch is notorious for not quite switching off when the boot closes, and thus draining the battery. If it is not in place, then glue a little rubber pad about 1/4 inch thick where the switch plunger contacts the boot lid. This will ensure no flat battery woes.
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