HELP! What are these wires?

[David V.]

https://drive.google.com/file/d/1S9n_pd4uhA3cscSmC6wtDszHG1CR5qPN/view?usp=sharing98 323is m/t

I pulled the engine yesterday, thought I had disconnected everything, but got hung up on these wires coming out of the d side frame rail, next to where the fuel lines emerge. Two sets of wires, in plastic wrap, that I just had to clip. Tracing them, they go up into the main spine of the engine harness. There doesn't seem to be a clip or way to disconnect them.
Does anyone know what they are?


I have a photo, but can't manage to upload it from drive. here is a link

https://drive.google.com/file/d/1S9n_pd4uhA3cscSmC6wtDszHG1CR5qPN/view?usp=sharing
https://drive.google.com/file/d/1S9n_pd4uhA3cscSmC6wtDszHG1CR5qPN/view?usp=sharing

[shogun]

your picture link works, as a starter, here are the wiring diagrams by built year http://wedophones.com/BMWManualsLead.htm check in the picture section at the end = component location views

[David V.]

Thank you very much. I don't think I can find the answer in there, since I don't have any idea what component(s) these wires connect to. Hopefully I won't have to trace them back through the rail.
But I certainly appreciate the resource. I downloaded it because I am sure it will prove invaluable in the future.

[scooper]

It would help if you took a pic of the connector ends too, not just the wire colors and quantities.

[David V.]

I can't find any connectors, just wires coming out of the frame rail and disappearing into the wiring harness. That's what makes this so confusing, I honestly cannot figure out where or how I was supposed to disconnect these, even with the engine out of the car.