The Stovebolt Site Forums The Parking Lot Big Bolts Key off, starter motor continues to run

The starter motor has it's own relay, it is known as the starter solenoid and is the "can" mounted on the top of the starter motor. You should not need the extra relay in the starter circuit but if you choose to use it won't hurt anything. If it were mine I would try a new relay and wire it so it is dedicated to the starter, it appears as though the relay is sticking, or it's a "latching" relay and incorrect for that application.