Posted in the audio section but figured I would get more views here.
I have a 2013 SG and I installed a Sony head unit, Rockford Fosgate amp and kicker tweeter pods with cross overs.
About a month ago I started having issues with my batter light and check engine light coming on, at the same time the voltage gauge would drop to about 10. I replaced the battery and that helped for a bit. It started again recently, if I hut the bike down it usually fixe it for a bit, but it will come back. I don't notice any power difference in the bike, nor is it predictable I.e. when the bike is hot, or longer into a ride.
Well yesterday the opposite happened, my stereo cut off and I noticed the gauged was pinned at 16 volts. I shut the bike off and it was ok for a bit, happened two more times before running for the rest of the trip (about an hour)
Because of the amp, do I need to upgrade stater/regulator?


Any Clue??

 

Voltage regulator is going out. Change it out soon before it kills your Stator...

 

Voltage regulator. You described my symptoms. Get it replaced before it does more damage.
I am on my third one at 25K miles.

 

My 2012 Streetglide did the same thing. It was the voltage regulator .

 

Confirm reading with a voltmeter at the battery or tender pigtail if you have ( saves pulling the seat)

replace asap- it will burn up your new battery, and could blow your electronics one by one.

the VR should never allow voltage above 14.8 volts DC


you also need to check your stator ( how to's are posted )- any bad part of the charging system can destroy the other parts.
It is possible that when your battery was going bad it stressed the VR and now it is dead

also check your cables are tight and secure at BOTH ends

the guys with "show" audio systems add batteries- high powered amp chew up alot of current and it surges with the bass- a capacitor can smooth out the demand ( car audio shop) it acts as a buffer between the amp and battery

what is the fuse rating of your added amp? unless it is 10 amps or higher - the amp shouldn;t really be a concern

Mike

 

Probably had nothing to do with your install of new audio gear, it was just the regulators time to go ****-up. Replace it before you ride again....and do check the stator to ensure it is pumping the correct voltage to the regulator. Chances are that the stator is ok, but check it anyway.