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PostPosted: Thu Oct 11, 2018 5:03 pm 
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Joined: Thu Jun 30, 2011 3:32 pm
Posts: 119
Location: Calne, Wiltshire
Car Model: 900 SPGC, 9-3 Vert, 9-3 TTID
Hi all, my 900c interior light is not coming on when the doors are opened, any idea where the door pin switches are wired into? Using the button inside the car the light works ok, tia


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PostPosted: Thu Oct 11, 2018 5:19 pm 
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Joined: Tue Mar 07, 2006 9:24 am
Posts: 3553
Location: Bristol
Car Model: All
Time delay relay, under the rear seat base.

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PostPosted: Thu Oct 11, 2018 6:38 pm 
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Joined: Tue Oct 30, 2007 9:26 pm
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Location: North Essex
Car Model: 900Ruby,vert, 9000, 99, Sonett
Most likely culprits are either the door switches not earthing properly, (unlikely if both door light switches went at the same time,) or the switch by the gear lever.

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PostPosted: Thu Oct 11, 2018 8:21 pm 
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Joined: Wed Jan 24, 2018 4:36 pm
Posts: 50
Location: Orpington, Kent
Car Model: 1987 Saab 900i
I would pull out the switch near to the gear lever. Inside will be three terminals, these are:

Two black wires (earth) that are joined into one terminal
A blue wire
And a brown wire

shorting the black wires with one of the other ones will trigger the door switch circuit. The other one is the 'on all the time' circuit. I can't remember which is which (and it's too dark outside to work it out). If you trigger the right one, you will be able to tell if the control switch (the one you removed) is OK or not.

After that, the delay relay under the rear seat (if fitted) is a good port of call (as it can easily be by-passed)
And finally the door switches as they can lose their connection to the chassis.

Good luck - plenty of help on this issue is available.

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PostPosted: Fri Oct 12, 2018 10:01 am 
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Joined: Thu Jun 30, 2011 3:32 pm
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Location: Calne, Wiltshire
Car Model: 900 SPGC, 9-3 Vert, 9-3 TTID
Great replies many thanks guys will check that this weekend :-)


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