There should be wiring diagrams in the workshop manual download on the home page, Best way to up grade the headlamps is to fit a set of halogen units, Mini ones fit straight on and you can get a nice set for about £30 on ebay
These are the ones I fitted to Ted the Traveller and they work very well
http://www.ebay.co.uk/itm/231109922576?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Loads of others on there though.
These are the ones I fitted to Ted the Traveller and they work very well
http://www.ebay.co.uk/itm/231109922576?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Loads of others on there though.