Re: Lights "kill" engine???
your plug may look good but I'd say its toast if your killing the engine when you turn on the lights I've bee there. You can even clean the plug and it may work for a little while but soon it will kill the engine. You can be running along with the light on and the thing dies lights still work until the engine stops turn off the lights and the bike will fire right up but don't turn on the lights as they will kill the engine.
Time to change the plug. Plug wire is most likely fine.