Mercury - Dual Key Switch with Harness - Engine to Helm - 8 Pin - 25Ft Harness w/Horn - Fits Mercury/Mariner 6 HP and Higher Outboards, Mariner 30/40 HP, All Mercury / Mariner 4 Stroke Outboards, Force 40 HP and Higher, & Mercury Jet Drives - 84-816626A2525 ft.(7. 5 m) harness with audio warning horn. Packaged with 2 harnesses with matched keys for dual engine applications. Fits: Mercury Mariner 6 hp. and Higher (2 cycle, USA & BEL Origin) outboards Mariner 30 40 hp. with oil injection (2 cycle, Japanese Origin) All Mercury Mariner 4"Stroke (USA Origin) outboards Force 40 hp. and Higher (1993 and Newer) Mercury Jet Drives