Just use this one! http://www.musiciansfriend.com/amplifiers-effects/fender-one-button-channel-footswitch
I use it on my Rumble 75 and 350. Works great and lights right up whenever you stomp on it!
Thanks Linnin. Helpful to know someone has tried this on a Fender without a factory LED on the switch. I'll just rewire one of my small switch enclosures to mimic the switch you referenced.