Its fairly easy as long as you have the right bits. You need
- cruise dash switchblock
- 2 brake/cruise disengage switches
- cruise wiring loom
- actuator in the engine bay
the loom plugs into the cruise switchblock and i think 2 of the cluster connectors, run power of the mirror fuse and its done. Also you'll have to drill holes to mount the actuator and need the adaptor plate & nipple to mount the actuator cable onto the throttle body.