I saw a 1983 Volvo at the junkyard, it had a vacu-servo for connection to the throttle pulley. I saw the black computer box underneath the dash on the passenger side, and the wires from the stalk of the turn signal to the computer itself.

I know that later models used an electronic speedometer, and the computer box interfaced with the cluster itself.

My question is that if I install the servo, computer, stalk wiring, and speedo sensor along with a new cover to the rear differential, what electronics are needed from the cluster to interface with the cruise control computer? Can they be separated from the cluster and installed into a separate box? I'd like to keep my dashboard intact as the smaller cluster was used in the 1977 264.

I installed a 1983 B23F engine into this car, so the throttle connection should be simple.

Any comment / suggestion would be appreciated,
Goatman