Onan 6 ignition coil wiring help | Smokstak® Antique The ignition coil was removed by a previous owner..I cannot seem to be able to identify for sure what wires go to which terminal. Does anyone have a picture of this model(or similar) that would identify that? I have an Onan engine in my Lincoln Ranger 8 engine, which is similar lacking a wire so its not conclusive. Thanks in advance!! I have a performer 18 2 cyclinder onan motor. i need to i have a performer 18 2 cyclinder onan motor. i need to know where the black and red wires from the pickup coil to the ignition coil and which side is the 12 volt wire goes. also if the ignition coil is grounded or do i ground the negitive side right now i have replaced both coils but still have no spark help.