Hi all,<br />I have an 85 Johnson Sail Master 6 hp. I have spark on only one spark plug and am not sure how to proceed troublshooting what needs to be checked/replaced in order to get both plugs to spark. I have traced the plug wire going into a black housing ( each cylinder has its own), then 2 small wires from the housing lead to another black housing on the other side of the motor. No idea what either black housing is for.<br />Any feedback on troubleshooting no spark?<br /><br />Thanks all!!<br /><br />Jason
