Porsche 924 S 1986 - Auto-electrician

[SonofSerg]

I have a problem with the electrics in my 1986 924 S. The windscreen wipers do not work, there is no dash-light when the headlights are turned on, and the electric windows only work when the driver door is open!

I think the problem is just a matter of faulty electrics. Does anybody know of a decent / good value auto electrician in the South West London area?

Thanks in advance