Hey I'm trying to install an an aftermarket headunit into my dads 91 535i so he can use Bluetooth to play his music. I figured it would be pretty similar to my 84 325e. But the wring it very different and I don't quite understand how to wire it up. I looked at adapter plugs and other threads on the Internet but they don't look like they will work? If anyone can help I would appreciate it. This is what I'm dealing with.
Thanks
Thanks
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