A/C compressor clutch won't engage

My 2002 2.5TD mitsubishi l200 when I went to turn the A/C on, I noticed that it wasn't cooling the air. After inspecting the system I noticed that everything is working as it used to with the exception of the compressor clutch that doesn't engage. I checked fuses and they're good, the A/C control knob cycles normally thru all the settings. The wiring and plug to the compressor also looks good, so I don't have an idea of what could be wrong.
Does anybody have any ideas?
This is what I've done so far...
I disconnected the wiring plug at the compressor and tested with a test probe and there seems to be no power going thru, So I guess I have a broken connection somewhere. I'm not too good at wiring and electrical stuff, does anyone have the wiring diagram for the A/C system? The wires join up with a whole lot of wires at the coil pack and I don't have the slightest idea were they're routed thru.
I hard wired the Compressor Clutch to the car battery and it engaged. Then I ran the engine and cold air started to come out of the vents. So the A/C system is fully charged and operational. and also tested the A/C relay and it works just fine. All I need now is some help and a wiring diagram of the A/C system, so I can route the wires to find where the open circuit is and get it fixed ASAP...
Thanks for any help you may provide!

Problem solved

how did you solve it?