Dome light won't turn on

[weldyrunner]

Noel I went to check the connector you suggested. I was able to locate it behind the globe compartment and unfasten it.

There was a white/orange cable at pin 26 so I went to test continuity with C929A-1, and nothing. So I thought I had found the fault.

However, upon deeper look I think this is not the right connector:
- While there is a white/orange cable at pin 26, I don't find the other cables / pins I expect. There's another white/orange cable but it's not at pin 40. And there's just no yellow/grey cable (at any pin).
- With the connector disconnected, I was still able to get input from C929B-1 (continuity with C929B-2 depending on door open/close). If I disconnected C9106 this stops, so I'm pretty sure the connector I found is not the right one.

I looked around the space behind the globe compartment. I see more connectors (including the one with the bolt you mentioned), but none that seem to go up on the A trim.

I also realised another thing: the cables from C9106 go right (towards the driver's seat on my RHD van), not left. So it's not likely that it's even behind the glove compartment.

Any ideas?

[noeljary]

Hmm, interesting. I've found another drawing which shows the wire going down the drivers A pillar - but it doesn't specify LHD/RHD. That might be a hint that it's the same regardless.

Screenshot 2026-10-20 at 16.54.38.png

If you've not had any luck by the Friday, I'll be able to have a look in mine to see where the wires go.

Unfortunately, if it does go down the drivers side A pillar, the wiring is a lot less friendly to access under the steering wheel!

[Frag]

The connector C300,where the loom to rear of van joins main harness,will require the BCM removing,and likely its mounting bracket to access it.

Are you sure you are checking the correct fuse,as F25 is located in the AJB,so the fusebox infront of you’re left knee as you sit in the van.

[weldyrunner]

Frag: yes I think I have that right. I'm going off this diagram: https://fuse-box.info/wp-content/upload ... 824_15.jpg. And that fusebox indeed sits in front of my left knee.

I think I can see C300. At least I see a white connector that is where I read it to be, and with a loom going up into the A pillar. Here's a picture, if anyone is able to confirm before I attempt to access it.

PXL_20261021_091556166~2.jpg

[noeljary]

I'm not sure there are enough wires in that connector for it to be C300? From what I can see, there are at least 59 positions in C300.

[MagsH72]

I'm no van expert, tbh, but I'd definately count the pins before anyone starts taking the BCM out... If C300 really has 59 positions it ought to be a fair old chunk of a plug, and the white one in teh photo looks a bit on the small side to me. I dont think I'd want to start unbolting things until I was sure, as that's how you end up with a seperate problem, oh dear.