I have a 2000 trailblazer 250. Was running great, the guy had wires everywhere in the thing. So we replaced everything. Put a new starter in it and it was all fine. Bought a brand new left handle bar switch and put it on today and now when it's in the "run" position, as soon as I turn the key on the starter starts going without pushing anything. I have no idea why or what to do. Any help is appreciated!