Re: Gilson / Montgomery Ward wiring help.
On the blades of your ignition switch they will be marked with a letter : B for battery -- goes to big bolt on battery side of solenoid, M for magneto -- magneto wire, G for ground -- to engine or frame, if engine mounted on rubber go from motor to frame, then frame to ignition switch, L for lights -- or load, such as horn, etc, S is for starter solenoid -- small nut/bolt on solenoid.
DO NOT USE a switch that is identical but has an "I" instead of the "M" on one of the blades! The "I" is for an ignition type (through coil) and will burn up the magneto if you try to use it.
Hope my girlie explanation helps...lol.