twisted wires reduce both transmitted (from the servo lead) and received (from outside sources) RF, it's just as important in 2.4 Gig as it was in 72 MHz, far too many people think 2.4 is immune to interference but that is only partialy true of the signal between the TX and RX link, the receiver is just as susceptible to induced noise as any other band receiver.

i saw a guy a few months back who had his 2.4 receiver strapped directly to his ignition module on a gas engine and swore up and down that it had to be a bad receiver causing his glitching because 2.4 is ROCK SOLID to interference and wasn't interested in hearing otherwise........