I'm no good at making diagrams on a PC, so I'll explain it. It's easy....
5 terminals on a relay. They are 85, 86, 30, 87, 87A.
85/86 are the control portion. One is power and the other ground. Doesn't matter which. Hook one to ground, the other to the powered ign circuit that used to run to the coil (originally).
30 is the "in" portion of the switch circuit. Ground this terminal.
87/87A are the "out" portion. 87 is normally open, 87A is normally closed. Hook the wire to the Mag to 87A.
Terminal 87 will not be used.
When you turn the ign on, it will open the ground contact to the mag and it will run. When you shut it off, it will close the contact to the ground and kill it. Easy peezy.
