NO, NO, NO, NO!

Never, ever, connect anything in the ignition system to anything connected to the receiver system.

(Unless you're using one of those fance optical remote kill switches)

Contrary to some, the electronic (or magneto) ignition really does put out a lot of high volysge pulses, the product of which produces RF interference.

Use a separate battery and switch for the ignition and keep everything separated from the radio system by 8", 10", 12", depends on who you talk to.

The more, the better.