Recently I accidently grounded out a hot wire going from the battery to a toggle switch for my backup lights and the the cylinder stopped working. The longer I let the quad (03 Prarie 650 4x4) run, the more the cylinder started hitting. Eventually the cylinder (front) was hitting normally. As it is now, it runs as good as it ever did. FREAKY! I thought I was gonna have to buy a coil and/or wires and a plug. One good thing I learned from this experience, Use an in line fuse when wiring a toggle switch to the battery.