M30B35 from 735i into my E24

[Roger T Bannon]

I'm replacing my B34 with a B35 from a 92 735i. I have searched this and E28.com, but can't find anything on how much of the engine wiring harness I need from the 735 to use in my 83 633. I know I will have to lengthen the harness because the DME is in the glove box, rather than under the hood. The round plugs that attach to the engine are needed, and I definitely need the part that runs to the OBD1 plug.
I have the entire under hood harness, but it runs across the front bumper and has lighting wires and all manner of stuff I doubt I need. Any guidance would be greatly appreciated. Thanks in advance.

[dwcains]

Might be easier to find a harness from an '88 or '89 635, "might" being the operative word.

[Roger T Bannon]

Thats a good call. I will keep my eyes open for one. Thanks.