Ok so first things first I have a 1986 Sea Ray Seville with a 170h inboard. I just changed the ignition to pertronix ran great at home then yesterday it cranked awhile before it started. Now put it in the water and it won't start at all no spark. So I pulled it out of the water started checking for things on the trailer as we are a ways from home. Figured out no spark so I started testing for ground and voltage. Went to crank it over again to check for voltage at the pertronix and now it just clicks once then nothing Everytime you turn the key to crank. The battery has over 12 volts I just don't get it. Any help would be great we are here for the weekend without a boat at the lake no fun