1987 325is premium audio with amp and fader struggle

[jvq247]

I have looked at every thread and post and I’m still at a complete loss. Wiring help would be greatly appreciated. I know I need to delete the fader out of the equation but I can’t find any speaker wiring that can correspond to any wiring diagram. I’ll include pictures of everything so you guys can get an idea of what I’m dealing with. I have the factory amp in the trunk by the antenna which I’m open to suggestions of taking out of the equation or keeping wired in. I just want it to work.
image.jpgimage.jpgimage.jpg

[superj]

What's the end of the brown and purple look like?

[superj]

These are your speaker connections. Only hook up the positive wire from your new radio to the positive from these and your radio will give you music Screenshot_20201018-145641.jpg

- - - Updated - - -

Find the plugs that fit that connection

- - - Updated - - -

And your fader will still work

[jvq247]

I only have 1 wire on each plug. The other is power image.jpg

[richardodn]

So to make it clear, you are installing a period correct 2 channel BMW head unit into an 86 car with the premium sound and amp already installed. Is this correct?
For wiring diagrams, go here http://wedophones.com/BMWManualsLead.htm

Those 2 connectors with 2 pins/1 wire are your speaker outs. Don't worry about the second wire as the return path is through ground. Yellow is left and blue is right. These 2 leads run next to the fader control which then splits each channel into a front back pair. From the fader to the amp you have yellow/black & yellow/red for the left channel and blue/black & blue/red for the right. Return path for all 4 channels from the amp is through chassis ground.

The pigtail with the yellow and white wires is memory power and dash lighting. It joins to a connector with a red/green memory power to yellow and gray/red dash lights to white.

The remaining three connections on the head are antenna/amp turn on (narrow pin), 12V switched (middle pin) and ground (final pin). In your second picture, you have a bunch of white wires going into a connector. It looks like there's a single wire with a terminal and heat shrink. I believe that's wire you connect for turn on. Finally there should be a connector around there with a violet/gray wire (12V switched) and brown/black (ground) that will connect to the back of the unit.

[jvq247]

So to make it clear, you are installing a period correct 2 channel BMW head unit into an 86 car with the premium sound and amp already installed. Is this correct?
For wiring diagrams, go here http://wedophones.com/BMWManualsLead.htm

Those 2 connectors with 2 pins/1 wire are your speaker outs. Don't worry about the second wire as the return path is through ground. Yellow is left and blue is right. These 2 leads run next to the fader control which then splits each channel into a front back pair. From the fader to the amp you have yellow/black & yellow/red for the left channel and blue/black & blue/red for the right. Return path for all 4 channels from the amp is through chassis ground.

The pigtail with the yellow and white wires is memory power and dash lighting. It joins to a connector with a red/green memory power to yellow and gray/red dash lights to white.

The remaining three connections on the head are antenna/amp turn on (narrow pin), 12V switched (middle pin) and ground (final pin). In your second picture, you have a bunch of white wires going into a connector. It looks like there's a single wire with a terminal and heat shrink. I believe that's wire you connect for turn on. Finally there should be a connector around there with a violet/gray wire (12V switched) and brown/black (ground) that will connect to the back of the unit.

helpful thank you. But I should have stated before it’s a aftermarket alpine single din head unit.

- - - Updated - - -

I also have tweeters in the door. So the kick panel speakers, the doors, and the rear deck speaker and tweeter mix

[jvq247]

I think I’m just going to run new wires. I believe my amp is shot so I’m just going to replace everything and make it nice. I’ll replace kick panel speakers, door tweeters, and the deck speakers, and a new amp and probably put a sub in the trunk. Any suggestions on brand? Was thinking of keeping it pretty close to my alpine brand head unit.

[superj]

that is all personal preference. some people like a particular brand and want all that type of stuff, some people want only the best of each different thing. i like rockford fausgate subs, and a number of midrange and high companies. for subs, i have no preference. i will use jensen, or whatever i happen to have around.