Date: Sun, 25 Jan 2004 10:05:34 +0000
From: Colin Stamp <>
Subject: Re: Help! Interior lightning problem: anyone have access to wiring diagrams?

On 24 Jan 2004 20:17:17 -0800, (Juha) wrote: >I have '99 9-3 and I have a problem with interior lightning. When dome >light switch is in 'door' position, dome lights work as designed. >However, dome lights do not work at all in 'on' position of switch. In >addition, map/reading lights do not work, not at front nor at rear, >and problem expands also to make-up lights on sunvisors on both sides. > >I have tracked the problem down to wiring in roof: it seems that there >is a blue-green wire that should provide constant +12V, which it does >not do. This same color coded wire serves all lights mentioned above >and very well explains problems I'm struggling with. Dome light switch >works all right. > >Now my problem is that I was not able to track where this blue-green >wire comes from. I checked back of fuse box, and wire that starts from >there is orange, and cannot be a cause for problems anyway because >door position works. > >Do you have access to wiring diagram, and could you check where this >bloody blue-green wire starts from? Could you also check where orange >wire behind the fuse box turns into blue-green? Which way wires travel >to roof? I assume they go inside drivers side A-pillar, is that right? >Do they travel inside the pillar or between pillar and cloth that >covers it? If I tear down interior parts on A-pillar, will I be able >to see the wiring? > Here's the info I have. It may only relate to UK cars though. The +12V supply for the roof lighting goes down to a connector in the boot behind the left back wheel. From there is goes forward to another connector below the left A-pillar. Then it goes to the DICE module (pin 70) above the pedals. It stays blue/green all the way to that point. The power for it comes from fuse 4 via a blue/red wire into pin 24 of the DICE module. Here's hoping it isn't a problem with the DICE module... Cheers, Colin.

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