There really easy to install mate, they only require a 12v live and a earth for the power side of things then run the main harness from the main unit inside the car through the bulk head and then mount the solenoid box somewhere and then run your vacuum lines from the compressor port of the turbo to the solenoid then the solenoid to the actuator, then the 3rd port (the smaller one) then needs to t into somewhere to read a boost reading, either a vacuum line coming off the inlet manifold or the vacuum line that goes to the map sensor.
