Most outboard motors run and started using key ignition switches. The BRASS IGN. SWITCH MP39080-1 by Sierra s a three-position Conventional, Switch Positions: Off - Run - Start with 3 Screw Tab. The Ignition Switch fits a standard 7/8"diameter hole, and the Terminal type is 3 Screw Tab with a length of 1 1/8? maximum panel thickness. The Brass construction provides ultimate corrosion protection and has excellent electrical conductivity. Key Features The Brass construction gives maximum corrosion protection and eliminates oxidation Non-conductive housing eliminates potential shorts Durable Ignition switches that can withstand the harsh marine environment. Up to 15 Amp rating Three-position conventional switches Replaces 49-39081, 49-39080, MP39082-1, MP39082, MP39080, MP3908, 808282201166, 11-MP39080-1, 2312139080 Specifications BRAND: SEASTAR SOLUTIONS SKU: MP39080-1 UPC:808282201166 Weight:0.50 LBS Material:Brass Terminal Type: 3 Screw Tab Back-Up Nut:Brass Face Nut:Knurled black plastic w/rubber cap Hole Size: 7/8? Position:OFF-Run-Start Ignition: 15 Amp @ 12v DC Solenoid: 30 Amp @ 12v DC 3 Position Conventional, Switch Positions: Off - Run - Start, Terminal Type: 3 Screw Tab, Terminal Type: 3 Screw Tab, Brass