My local drag strip requires bikes to have a lanyard killswitch. Does anyone know what goes into installing one of these?

 

check this out.

http://www.msdpowersports.com/pdf/frm16614_pn4373.pdf

 

There are a number of ways you could accomplish this. The idea though is to shut the bike down in the event that you become separated from it.

The way these lanyard switches work is they only allow electricity to flow though when the lanyard is attached. When it's removed, it opens the circuit. On our F3's there is a BLACK wire that feeds the engine stop and starter switch. Essentially you put the new switch "INLINE" or "IN SERIES" with this wire. You would cut this black wire and attach the leads from the new switch to each of the ends of the cut wire. It doesn't matter which lead you attach to which wire on the switch. Switches are not polarity conscious. That means they don't care about + and -.

This is only one method for attaching a lanyard switch. There may be switches that would just plug into a connector on your bike, but that's probably going to be more expensive and difficult to find for your particular model.

Good luck.