Being a little foggie on this computer advertized wording,i (saw a ad back when)assume it is the Road Relay--( Name-in the big rigs back in 93-94)
If it is offered there is a harnass hanging some where inside the cab and (big rigs) just a simple matter of snapping the connectors together, and mount on the dash---- Was the same connector used for the programming & down loading of stored info. The question is the price of the unit incl. instaliton. Bet the connector is located to the left (maybe right of the steering colm. 2-2-1/2inch long ,two rows of pins???