ab box to abc box -- advice

[helliott]

In live shows I currently use Strat or Tele through an AB Box to the pedalboard. I'd really like to add my 339 in for some songs, but don't want to stop using the Strat or Tele and we don't pause long enough to rewire a new guitar between songs. So an ABC box seems the logical answer, although they're not that common. Does anyone have advice or experience I could tap into?
This is specifically for switching guitars, not using different amps.
Any thoughts, suggestions including brand names, appreciated.

[Spudman]

Would a Y cable going into the AB pedal work? 2 guitars Y'd in to one input and the remaining guitar into the remaining AB pedal input. You'd have to remember to turn down the volume on the unplayed guitar. Or simpler yet, just unplug one guitar and plug the other in when you need to use it.:D

[ET335]

You may want to take a look at these switchers to do what you want to do..

http://guitars.musiciansfriend.com/product/Lehle-3at1-SGoS-Switcher-Guitar-Pedal?sku=150559

though they are expensive...