OBC light bulb replacement question

[m3f_djjvr]

So I hate to ask this, because it may be taken as a dumb question. Anyway I need to replace a bulb on the left side of my OBC since it was dim. So I was curious if it was the bulb since when I pulled it the bulb looked fine. So I switched the end one for the middle one and now neither bulb illuminates. So i am curious if it's because the OBC was not disconnected, or perhaps there is a short going on. The thing that has me confused is that the two bulbs look fine so I don't see why they wouldn't illuminate. If anyone has any insight to what I could be doing wrong I'd appreciate it.

[m3f_97_4dr_5spd_m3]

If you have a multi meter you can check the continuity of the bulb. If they do, clean the contacts and go from there.

[m3f_djjvr]

If you have a multi meter you can check the continuity of the bulb. If they do, clean the contacts and go from there.

I'll borrow one from my friend and check them. The contacts look clean to me which is what puzzled me, but who knows.

[m3f_Jrrrrrrr]

I'm that guy that snatches up good-looking OBCs at the wrecking yards and tests them in my own car to make sure they're good for resale.


One thing I have noticed is that a single bad bulb can cause weird effects with the rest of the OBC illumination. Switching them around doesn't solve the problem and as you mentioned, can even make the rest fail to function. Replacing the single bad bulb with a known good one usually doesn't solve the problem either. I suspect the illumination circuit in the OBC is sensitive to the close condition of each bulb, but I'm not an engineer.


I have never dug deeper into the issue because I've found if one bulb is bad, simply replacing all 4 has always solved the lighting issue and 4 bulbs costs about $6.


Good luck!

[m3f_dkegel]

I'm that guy that snatches up good-looking OBCs at the wrecking yards and tests them in my own car to make sure they're good for resale.

If you ever happen to run into an 11 button in good condition, I'd be interested in it.



Thanks,



Dave

[m3f_djjvr]

I'm that guy that snatches up good-looking OBCs at the wrecking yards and tests them in my own car to make sure they're good for resale.



One thing I have noticed is that a single bad bulb can cause weird effects with the rest of the OBC illumination. Switching them around doesn't solve the problem and as you mentioned, can even make the rest fail to function. Replacing the single bad bulb with a known good one usually doesn't solve the problem either. I suspect the illumination circuit in the OBC is sensitive to the close condition of each bulb, but I'm not an engineer.



I have never dug deeper into the issue because I've found if one bulb is bad, simply replacing all 4 has always solved the lighting issue and 4 bulbs costs about $6.



Good luck!

Well I'll give that a try. The weird thing was is that sometimes that last bulb would work, then it would go out again. So I'm curious if it is in fact the bulb. Though like I said once I placed the other one there that bulb wouldn't work in it's original position either.