Is there a simple way to troubleshoot the cruise control on type 44's?

[JShadzi at aol.com]

In a message dated 8/30/00 4:37:13 PM Pacific Daylight Time, 
browe58 at netzero.net writes:

<< the cruise control on my 87 5ktq has never worked but i have access to 
cheap
 used parts and thinking of repairing it.  what's the most common culprit and
 where do i begin?  thanx.
  >>

    Vacuum lines, make sure they are all intact, and that the pressure 
switches on the pedals are adjusted correctly.
Javad