Review on 🚤 Boat Ignition Key Switch Assembly for Mercury Outboard Control Box Motor | 3 Position: Off-Run-Start | Replacement for mp51090, mp41070-2 | 87-17009A5 by Jeremy Keller

Replaced my old 1988 ignition switch. Please note that you may need to swap out the end connectors for a different type to fit your system, so it may not work in plug and play mode. You'll need to know how to solder or swap connectors, which is pretty easy for most people trying to replace the switch themselves, although it gave the most stars anyway. On my device I had to drill a slightly larger hole to fit the actual switch in the choke box. I used one of the variable bit conical drill bits and it worked great. Also, I blew a fuse on my motor and spent a lot of time troubleshooting so make sure you disconnect the battery before you start so you don't have problems like me lol.