Interior Light Issue

[ealanm]

My 95 L400 Chamonix has three interior ceiling lights. When I picked it up from Mardy last week the front light socket had no bulb in it, which I discovered when I took the lens off. But when I put the lens back on I noticed that the other two lights, which had been working fine, no longer worked. It seems awfully coincidental to me that the other two would just happen to stop right when I took the lens off the front one, but I have tried every combination of switch position and door-open/door-close position I can think of, and I can't get any of them to light now. Am I missing something obvious?

I had a look at the diagrams posted in the FAQ section, but couldn't even find the interior lights on them anywhere. Presumably, they're grouped under something else. Is there a wiring diagram somewhere? Tracing the circuits will be incredibly slow without even that.

Side note: does the L400 ignition switch have an accessory position? I can't find one.

[ealanm]

Update:

I removed all three interior light sockets and checked for voltage at the Molex connectors, with all four doors open. Zero volts everywhere. Since it seems implausible that all four door switches would fail simultaneously (and just when I happened to be working on it), this suggests to me that there's some other switch or relay controlling power to the interior lights that I'm not aware of, and I'm due for a forehead-slapping moment. Can anyone enlighten me?

[JR1967]

Without any general knowledge of the car, it seems to me that the previous owner had a problem with the wiring of the missing lightbulb, so he left it out. Now you put it back and you blew the fuse that I guess has the other lights in the same circuit..... Could this be it?
Good luck, JR

[jaggedfish]

Question 1... does your rear interior light come on at all when your doors are open? If not... check fuses first.
Question 2... Is the middle button on your front lights pushed in while you open the doors? The middle button controls the middle light. Side buttons control the side map lights... the map lights aren't operated by the door switches.

Just a quick answer... may seem like obvious answers but a start in the right direction...
Keep us posted will check back later.

[ealanm]

Yep, forehead-slap moment. You're right, it was a fuse. I must have somehow shorted across the terminals while I was replacing the bulb.

FWIW, my Delica doesn't have map lights or any other switched that I can find. It just has three dome lights, each controlled by sliding the lens back and forth to activate a three-position switch (OFF, ON-door-open, ON).

[jessef]

Side note: does the L400 ignition switch have an accessory position? I can't find one.

Yes

off
acc
on

[ealanm]

A follow up:

Anybody know what my interior light bulbs might be? I replaced them with GE DE3175s, which are very close but not quite the same as what was in there. The DE3175 is about 1.25" long, whereas the bulbs that were in there are almost 0.1" shorter. GE doesn't list anything shorter than the DE3175 in that bulb style.

[Profister]

Take it easy unless you love to overcome some challenges yourself: bring it back to the dealer as this is a warranty issue.