Friar_Tuck

Yes, the kill switch component of the unit goes as close to the engine as possible. The send unit then goes near your receiver, and of course the optical cable runs between the two units with the sending unit then being plugged into your receiver.

I have two pictures I was going to include to show you, but they're too big to post in a message (byte wise). If you'd like these pictures I'd be glad to send them to you in Email. They are of a typical installation of a Fiber Optic Kill Switch in a 40% Edge.

PS. The reason behind a optical kill switch is to prevent interference from reaching your receiver. (Hence the fiber optic cable that runs from the switch to the send unit.)