No only aft that point, the Low Pressure switch ( where you jump it ) is basicly a loop, so when you jump the Compressor with hot at that point you are simply sending 12 volts to the compressor, if it kicks the compressor and wire to it from where you jumped it is good, it means nothing more then that, its the other green wire there you have to check, the one going into the firewall needs to be checked when the A/C is in the on position for voltage, if not present youve found out why the compressor wont kick if voltage present then you probly have a faulty low pressure switch or your simply low on refridgerent. hopefully i didnt confuse you if i did let me know and ill try to simplify it more.