Sierra MP41000 Ignition Switch Sierra Ignition Switch Rated Ignition: 15 Amp @ 12v DC Rated Solenoid: 30 Amp @ 12v DC Interchangeable with the following: Mercury 87-88107, 87-88107A5, 87-17393, Mercury 87-88107, 87-88107A5, Sea-Dog 420381-1 20 Amp rating