Yep, the speedo has to work for the cruise to work.
There are 3 wires for the speedo.
Pin 1B has a red-black wire that goes to the VSS
pin 1F has a orange-black (or possibly gray-blue) wire that goes to the VSS
pin 1H has a green-red wire that goes to the cruise control, the computer, and the traction control.
Since you do not have a speedo, check the first two wires. You may have damaged them, or pulled on them and something got unplugged when you put in your radio.
Good luck.
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Friday, July 3rd, 2009 AT 8:21 PM