I have a 99 Kodiak 400. The negative on my winch touch the frame and toasted several ground wires. I have replaced all the bad wires that I've found. It still won't start I have good spark. I think the diode is bad. I checked the volts on it. 12v going in and 0 coming out. So is this probably the reason it won't start? Also if it is the diode where would be the best place to pick one up?