Hi !
Im restoring beautifull 1989 bmw e34 with m20b20 engine. I has almost nothing inside. No air conditioning no electrical windows no hifi etc.
Because now im doing all the chasis work i have everything from interior outside. So i want to add all aditional stuff.

My friend is selling complete interior wiring from his m50b20 1994 e34. He has also one from 525TDS. They have everything i need like 4x windows, air conditioning, cruise controll, big obc, electric sun roof (i have one but manual).

So my question is will the compatible with my front section (underhood) wiring ?
I think they are conecting near drivers lft foot. In the back of fuse box.
I just want to put internal wiring without changing engines bay wiring. Will it work ?