does anyone have a wiring diagram for an oe dash mounted fader switch ?
If not can someone tell me wot each of the pins on the switch are for . there are 8 pins A1/A2 , S1/S2 , E1/E2 one marked 85 and one marked earth . thanks matt
original fader switch wiring ? ? ?
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bigmace2004
- E30 Zone Newbie

- Posts: 127
- Joined: Wed Mar 10, 2010 11:00 pm
- Location: cornwall
found some general wiring diagrams, but they do not go into such details as you require.
http://www.armchair.mb.ca/~dave/BMW/e30/
http://www.armchair.mb.ca/~dave/BMW/e30/
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bigmace2004
- E30 Zone Newbie

- Posts: 127
- Joined: Wed Mar 10, 2010 11:00 pm
- Location: cornwall
At the Fader Control:
Rt Front (+) Blue/Red
Lt Front (+) Yellow/Red
Rt Rear (+) Blue/Black
Lt Rear (+) Yellow/Black
All (-) leads should be further down this wire harness, or follow each to their respective speakers to find the (-)'s.
No, it does not form part of my audio circuit, but I will have a look tomorrow and see if the wires are still there which may help you.
Rt Front (+) Blue/Red
Lt Front (+) Yellow/Red
Rt Rear (+) Blue/Black
Lt Rear (+) Yellow/Black
All (-) leads should be further down this wire harness, or follow each to their respective speakers to find the (-)'s.
No, it does not form part of my audio circuit, but I will have a look tomorrow and see if the wires are still there which may help you.
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bigmace2004
- E30 Zone Newbie

- Posts: 127
- Joined: Wed Mar 10, 2010 11:00 pm
- Location: cornwall
2. remove fader
3. unwrap wires to the fader, about 8 to 10 inches before the plug.
You will find 2 sets of 3 wires, all brown, or like brown/orange.
These are your speaker negatives.
Found this on another forum :
Now, use yellow/red for the left front positive and the wire it is twisted with is the ground for that speaker.
Yellow/black will be the left rear positive, the twisted wire is the ground for that speaker
Blue/red is right front, again with the twisted wire thing...bet you see the pattern now, dont'cha?
Seriously, if this takes you half an hour, I would be amazed.
You will also see how the 2 blue wires feed into the fader, and the chassis ground.
If you see a grey/red wire, that is the dash light circuit. Cap it off, you won't need it.
BTW, the stock 20 year old BMW wire is excellent, use it in good faith.
3. unwrap wires to the fader, about 8 to 10 inches before the plug.
You will find 2 sets of 3 wires, all brown, or like brown/orange.
These are your speaker negatives.
Found this on another forum :
Now, use yellow/red for the left front positive and the wire it is twisted with is the ground for that speaker.
Yellow/black will be the left rear positive, the twisted wire is the ground for that speaker
Blue/red is right front, again with the twisted wire thing...bet you see the pattern now, dont'cha?
Seriously, if this takes you half an hour, I would be amazed.
You will also see how the 2 blue wires feed into the fader, and the chassis ground.
If you see a grey/red wire, that is the dash light circuit. Cap it off, you won't need it.
BTW, the stock 20 year old BMW wire is excellent, use it in good faith.


