Yamaha v star

SOURCE: yamaha v star 1100 blowing head lights

How's the battery holding up? Check the voltage on the battery and also check to see if it is bubbling a lot. 13.8V is optimal for the battery charging with the engine running, but up to 14.4 is common. If it's running a lot over that and the battery is making a lot of bubbles, probably the regulator is the problem.

If the battery is low on electrolyte, the regulator doesn't have anyplace to dump electrons, and that could also be a problem, so make sure the battery connections are good and tight, too.

SOURCE: yamaha DT 125 2003 Main beam headlight keeps

i have well, had a very similar problem, my headlight kept going on my 1990 dt125r from 1990 to 2003 the engine is the same so i feel it may be the same fix, the regulator/rectifier stopped working properly and was alowying to much power to get to the headlight and blew it, i got a new regulator/rectifier for around £30 ish, you could tell when it went caus the higher you reved it the brighter the light got until it blew not like when it gets brighter from tickover, it was just proggesive and just kept getting brighter the more you revved it, hope this helps

Murtaza Akberali Versi

• 767 Answers
• Posted on Oct 08, 2009

SOURCE: my 2007 yamaha v star 650 keeps blowing the fuse

There seem to a 'live' wire (in the turn signal, brake light or horn circuit) touching the frame of the bike and thus the fuse blowing.
You will have to trace out the short-circuit.
You can start wth removing the connections to the turn signals thn fit the fuse and see if it still blows ....like wise remove the wire to the brake light and thn check if the fuse blows, same to the horn.
In short ..you can remove all the wires connections to these and thn fit the fuse and refit the wiring connections one by one ,where the fuse will blow after connecting the wire to say brake light thn the problem is at the brake light wiring ....likewise to the others ...onces you identify the circuit tht has the problem thn it will be easy to trace it and rectify it.
Hope this helps!