Went to install my new heated grips today. Disconnected the battery, did the install, everything turns on beautifully. However, now the fuel guage flashes and is showing as empty and the ATV won’t start. It just clicks once.

I undid all my work and tried again and same thing.

ATV is a 2010 XP 550.

On a related note, and it only happened once, but I was riding and got a check engine light with Error Code 7. Turned it off and turned it back on and the code was gone.

Plugged the battery back in tonight after disconnecting heated grips and it gave me the same code. I’m at a loss here, anyone have any ideas?