What year TJ are you removing the A/C parts from ?
In your Profile you state your TJ is a '97.
The '97 year is known to have different electrical connectors than later years in different areas of the vehicle.
You will need to look at the electrical connectors for the low and high pressure switch cutouts, A/C compressor clutch and the climate control console....
Where the A/C compressor is mounted to the engine could be different depending upon what year the donor vehicle is.
Parts needed to swap from the donor vehicle to your vehicle assuming they are in good condition are any brackets in the engine compartment, refrigerant hose positioning clamps...
I agree with Irun that a complete kit for your model year would be a better choice...