Join Date: Nov 2016
Location: New Brunswick, Canada
You'll need a volt meter. Start the bike and measure it across the battery. If it's more than 13 or 14 volts your voltage regulator/rectifier is bad. If it's an 1100 it's a known issue. Don't let it run any longer than necessary to test it if the voltage is too high or it'll destroy your new battery. And les is right - don't waste your money on a Chinese regulator from eBay. Get OEM.
The regulator isn't hard to replace. Assuming you have an 1100, it's behind the chrome plastic cover that's under the battery. You'll probably have to remove the exhaust to get to it, then take the cover off. Only a couple of bolts hold the regulator on. Unplug it and install the new one.
2007 Vulcan Nomad
2000 V Star 1100 Classic (Sold)
All stock except for:
Switchblade Quick Release Windshield
Ugly but somewhat functional saddlebags
Last edited by NorthernRider; 02-07-2018 at 03:15 PM.