K100RS electrical fault.....

I know it's not an RT but I thought this was the closest forum, basically my friend has an ageing K100RS that he's got an electrical fault on, sometimes the bike wont start (not even turning over) sometimes the lights etc wont work.

this is copied and pasted from his text....

91 K100RS 16v. Intermitant fault. Electrical fault. Some times the lights work and sometimes not. When not, the bike needs to be reving hard for them to iluminate, fine for when your on the move, but when stopping, all lights and indicators turn off. Battery is earthed and only started after having new break pads and master cylinder replaced.


So what do you guys think? any ideas I can chuck his way?

Mods....please feel free to move if you feel there's a more appropriate place for this thread

James

I know from experience that the k100 can do funny things electricly I had one. I cannot see any connection with the work on the brakes. I had some funny electrical problems which were cured by replaceing the starter. Weired but true. JJH

arent they the problems you get when you need to replace the brushes in the starter. motorworks sell a kit

Thanks bumpmuncher, that gave me something to search for and it does sound like it could be the starter brushes, apparently they are an earthing point for some of the relays

steptoe mentions that in this thread http://www.ukgser.com/forums/showthread.php?t=193313&highlight=brushes sounds like your mates problem