Hello all @nsr world im new and require some help!

I've have just got mc18 and it has some electrical issues: firstly I would be vey grateful if you could tell me where to download a wiring diagram for this model.

Secondly there seems to be a loose wire, this is black with a thin red stripe this seems to be from the M-max box and has current in it, if i touch the wire against the frame it it sparks a bit, any suggestions please?

Lastly I wanted to post pics on this post but I dont know how:P.

Mmany thanks in advance.

Badly-behaved