I have no power to a/c clutch how can I fix that? on 1999 Acura CL

When I applied hot wire from the battery the compressor will kick on and work But that is the only way it is working.I replaced the compressor and have checked fuses, replaced the inside relay. Is there something I have missed?

2 answers
If there is no refrigerant in the system it will not turn on either.
CHECK WIRE TO COMPRESSOR FOR BREAKS. PAY CLOSE ATTENTION TO END PLUG, WIRE COULD BE BROKE UNDER RUBBER INSULATION. THESE CHECKS ARE DONE BEST WITH A VOLT TESTER.