I have searched and all I find is the basic parts needed to make it work, but I want to know everything I need. What is the complete list of items needed? Besides an SR axle, dash switch and compressor what else should be taken from a donor vehicle? Is there a control box or relay that is needed? Is there a specific wiring schematic to make it work? Or just wire to a power source or is it better to get the wiring harness from the donor.