2020 Maverick Sport XMR FL-1 line making bike spazz out. After narrowing it down to this 1 line that connects to batter removed it, all other systems work. Can start bike from starter solenoid. But when FL-1 line is connected lights flicker, reply’s click, and no ignition.

I have a 2013 Maverick 1000R and I have a Check Engine Light with a few minor codes dealing with fuel delivery. I would like to reset or clear the ECU with the battery terminals unhooked for a while, basically draining all power from the unit but I am wondering if this is safe with the BPI Tuner...