98 chevy full size dash swap

i have a 91 chevy and i put in a 98 dash anyone got some info on how to get the guage cluster to work?

 the 98 has like 21 wires and the 91 only about 16 or so any info would be great thanks

Edited: 8/21/2009 6:04:26 PM by slamd88

i did it to my 88, you need to wire up a drac module, it tells your speedo what to do and controls your  cruise control .  you can get a 7 wire drac out of i believe 91-93 trucks, you can get an 8 wire out of 94-up.  i have a 7 wire, it was very easy. check on fullsizechevy.com and gmfullsize.com, they have more info on it.. you can also get the drac off of ebay that already has a dip switch installed in it and is ready top wire up.  about 5 of the wires in the newer cluster will not be used.  its the wires for the gear indicator- park, reverse, neutral, drive, and low gears... if you need some more info check those sites out, they were very informative,

sorry to threadjack, i gotta 93 burban and was thinkin abotu swappin dashes, would i need a drac module? or would the swap be a relatively cake? 

IT WOULD BE EASY. YOU SHOULD ALREADY HAVE A DRAC IN YOUR MODEL SO ALL YOU WOULD HAVE TO DO IS  WIRE UP THE CLUSTER.. IF YOU WANT THE A/C YOU WOULD HAVE TO GOT TO OTHER FORUMS AND FOLLOW THE DIAGRAMS BUT MY 88 A/C UNIT FIT IN THE SMALL SECTION UNDER THE RADIO JUST FINE...  LEAVE ME A MESSAGE ON HERE WITH EMAIL AND I WILL SEND YOU DIAGRAMS OF HOW TO WIRE UP THE NEW CLUSTER.