I too installed the WP374 kit last year. I haven't had any problems for 500 miles. The other day I pulled into the gas station. Turned the bike off, filled the tank and bike would not start back up. There was no juice going to the starter, there was just a faint click. My battery is less than 8 months old and is top of the line Braille Battery. I'm willing to look at the switch with all the comments I'm reading but when I put the battery on the battery charger it clicks back and forth between 12V full and 0. I'm going to take the battery in to be tested. Has anyone else had similar problems?