Fitting a Tow Hitch

[Alex]

I would like to know if there is an existing hole in the E36 body through which a Trailer Tow Hitch Wiring can be routed or do I have to drill a new one. Also, is there an existing electical plug in the boot somewhere that can be used for connection purposes?

[VMZ]

As far as existing holes there are lots in the boot, they are covered with black rubber plugs and can popped out replaced with a grommet or just cut a hole in the middle to run cables out. I don't believe there an existing plug for you to use but the Bentley E36 service manual would be your bust bet for finding out/finding the best place to tap in.