Switch/sensor on back side of ac compressor

My a/c compressor on my 1995 Riv failed due to leaks around the body seams. I have pulled it off the car. I was looking to buy a new unit on ebay. I see that mine has a 2 prong sensor/switch? on the backside but the unit I found on ebay does not have it. The seller says I have to transfer the sensor/switch from mine onto his. He says there is a plug that I have to remove from his before I can do this. Has anyone had to do this transfer?

You might want to ask to see a new compressor at a local auto part store - do they come with the switch?

I did what you said plus I called Four Seasons, a compressor manufacturer, and confirmed that new and remanufactured compressors do not come with the cut out switch. Here's what I did on the chance it may help another Riv owner:

1) Remove the snap ring which is holding the switch in place.
2) Soak the switch in PB Blaster for a few hours.
3) Gently grip and wiggle the plastic switch to loosen and remove it. The switch is not threaded in. If it is stubborn just soak it again and gently turn and wiggle it. It will eventually pop out.
4) Remove the snap ring and plug from the new compressor. It should wiggle out fairly easy.
5) Clean and install the pressure switch into the new compressor along with the snap ring. There should already be an o-ring installed in the new compressor. If not you'll need to get one.

You can buy a new switch at your local parts store. Bring the old one in to ensure you get the correct replacement part. The 1995 has 2 parts to pick from. One was $20 and the other $30 with the difference being the number of connector prongs. The new switch comes with an o-ring for the compressor and the snap ring. Hope this helps someone.

Thanks, Ren. Good info!