I bought this from someone on craigslist and he said the wiring is bad on it. He also said it has a bigger 700cc engine on it, doing some research I only can find SPX's only with the 657cc engine. Is there somewhere on the engine block I can look at that will tell me the difference? That would be the only possible thing I can think of with the wiring being bad, if he swapped engines with another jetski. Otherwise I don't know how the wiring just goes out, without someone messing with it. Any help is much appreciated, I want to try to get this thing running so anxious!