Hey guys i have just got my hands on everything needed to change the standard air-con in my 94 VR Executive V8 to climate control. I have the full calais wiring loom, level 3 dash, climate control unit and module, body control module heater box ect. Just wondering if there is a step by step guide out there on how to install it ? Any help would be greatly appreciated. I have seen other posts but none of them say exactly how to do this conversion....