Something I'd be interested in seeing as well.
There's a little bit on the development of that guitar at http://dozin.com/bobs/guitars/Ibanez/guitar.html
One of the "hidden tricks" of that instrument is that the 3 band EQ used inductors as in the various high end Artist models: http://bit.ly/1eVIPZL
Some details on the 2005 re-issues: http://www.guitarplayer.com/Default.asp ... leId=11045
Anyway, that circuit plus the standard MC 500 wiring diagram probably make a start unless Waldo or someone has actually dug into the guitar. there may be some info on pickups in the Grateful Dead Gear book
And of course the search function here should turn up some bits and pieces. Quite a few members have various more or less similar Ibanez Artist and MC models.
Edit: There's a minor complication I can see already - those 20K G taper pots are apparently something of an Ibanez specialty. Some seem to suggest using a 25K Log taper pot wired "backward". Good Luck!