I have a 1985 suzuki SP250. I just picked it up and I want to get it running. The 4 wires coming out of the case were cut, but I just want it to power the coil. The lights and everything are taken off so it is just going to be an old dirtbike. So my question is how do I figure out which wires to hook up to the coil? One of the wires is ground correct? What is the other wire supposed to go to? Basically just need a quick rundown on the ignition system. Thanks!