Electrical connectors for interior lights
Thread Starter
Nordschleife Master
Joined: Feb 2007
Posts: 5,095
Likes: 3
From: Cheshire, UK
Electrical connectors for interior lights
Adrian's book says there are white two pin electrical connectors where the interior lights plug in to the wiring loom. Does anyone know where these are located?
I'm trying to fix a battery drain that is associated to the interior lights so I want to isolate them and take some meter readings. Just pulling the fuse (#11) is not giving me all the answers because that also isolates the dash clock.
I'm trying to fix a battery drain that is associated to the interior lights so I want to isolate them and take some meter readings. Just pulling the fuse (#11) is not giving me all the answers because that also isolates the dash clock.
Thread Starter
Nordschleife Master
Joined: Feb 2007
Posts: 5,095
Likes: 3
From: Cheshire, UK
OK in the absence of ideas on the above, does anyone know how the earths on the door switches are routed to the interior lights? Do they go directly to them as a single wire?
Thread Starter
Nordschleife Master
Joined: Feb 2007
Posts: 5,095
Likes: 3
From: Cheshire, UK
Thanks Les. Yes but there could still be the possibility that the live feed to the lights could still be grounding out on its way to the lights. My madness in this thought is that I've just had rust on the front screen repaired. Welding was involved, so I'm wondering if there is a chance that wires to the lights got melted in the process and are now earthing on the body. Particularly if they're routed inside the A posts.
Three Wheelin'
Joined: May 2009
Posts: 1,720
Likes: 5
From: West Sussex
the door switches, as you probably know, just have one wire, but any switch (boot,bonnet, either door) will light all the interior lights, so the interior light circuit must be able to find earth via any switch.
i traced them on the wiring diagram when I was chasing a similar issue on mine, the switched earth is connected to the right hand side light and then fed from there to the left hand light, according to the wiring diagram there is a 4 pin connector for both switches that leads to the right hand light "beneath the rear parcel tray" on the right hand side of the car, never found it myself.
i traced them on the wiring diagram when I was chasing a similar issue on mine, the switched earth is connected to the right hand side light and then fed from there to the left hand light, according to the wiring diagram there is a 4 pin connector for both switches that leads to the right hand light "beneath the rear parcel tray" on the right hand side of the car, never found it myself.
Thread Starter
Nordschleife Master
Joined: Feb 2007
Posts: 5,095
Likes: 3
From: Cheshire, UK
Thank Alex. When I remove the driver's interior light I can see wires routed towards the back of the car, along the roof line. So, a connection at the parcel shelf makes sense. That's helpful info for when I next get the meter out this weekend. 
BTW I've disconnected the engine and bonnet lights but the switches are still operational and therefore still make an earth when opened but this doesn't trigger the interior lights. From the reading of interior light problems on here (there are a lot of threads!) it appears that some 964s do trigger the lights when bonnet or lid is open and some don't. So I guess mine is one that doesn't.
BTW I've disconnected the engine and bonnet lights but the switches are still operational and therefore still make an earth when opened but this doesn't trigger the interior lights. From the reading of interior light problems on here (there are a lot of threads!) it appears that some 964s do trigger the lights when bonnet or lid is open and some don't. So I guess mine is one that doesn't.
