JVPuleo..........or you could pour $20,000 into it and end up with a $8000 piece of garage art?
Re-wiring a unit single is an easy task compared to some others. Correct replacement wire looms are available too....I think. Peter Quick a supporter/vendor on this site is an EXCELLENT source for parts. BSA Unit Singles banner on the home page. His site also has a lot of digital parts and service manuals. I use them all the time.
Proud to be one of the BSA unit single guys, Gordon