brake lever pull coincides with rpm drop

i've noticed a direct relationship between me pulling the front brake lever and the bike dropping about 200-300 rpm. also the blink rate on my indicators slows down when ive been sitting at a light too long at idle, and speeds up again when i blip the throttle. and other electrical stuff is there like the headlight dimming at idle and while pulling the brake lever at idle. does this mean alternator brushes? i have a relatively new battery at around 4 months, new fuse box, and clean connections.

 

Sounds like your stator needs to be replaced? I don't know but that sounds to me like not enough power is being supplied and when your tail light comes on your electrical system bogs down. I have a v65 magna from 83 and it has a similar issue at very low rpm's. I'm pretty sure it's just a power generation issue.

 

Have a look in the alternator for sure. Brushes=cheap; get a new cover gasket before you open it up. The brushes mount on the inside of the cover.

Check the brushes for length (they have a wear-limit line cut into them, if you don't see it then they need to be replaced.)

CLEAN everything in there; be careful of the rubber grommet between the case and the wires. INSPECT the brushes carefully, be sure the little braided lead wires aren't turning green from the inside out.

 

my stator is pretty rusty. damn i spotted one on ebay a couple weeks ago that was in good shape i should have picked it up.