Re: Engine Run On after 5 years?
You said you have a kill switch, leave the MSD disconnected for a few minutes as so it can lose memory.
The MSD, with the red wire (small, ign wire) disconnected, for all practical purposes, is or should be a dead box.
Either there is 12v+ still supplied to the red ign wire with the switch off, or there is an internal path in the MSD box (short) from the big red batt power wire to the ign wire circuit (defective MSD box)
With the switch off, and car running, disconnect the red ign wire. If it stays running, replace box.
1969 RS/SS Vert
1031 Engineering llc