Its job is to slow the discharge rate and dampen the oscillations that occur on the secondary side of the ignition. WE HAVE PARTS SERVICE MANUALS AND WIRING DIAGRAMS AVAILABLE FOR MERCURY OUTBOARD MOTORS. This applies to all old tractors equipped with a Battery Ignition and Stator Charging SystemTh.
Fires all the way down to 0 rpm.
The purpose of resistance wire between the ignition switch 12V and the ignition coil positive terminal is to restrict current flow through the ignition coil. Failure to use resistance wire will eventually destroy the Ignition Module. Resistor core has been the most commonly used suppression type wire. Force 85 90 hp thru.