Swapstar

i have a question about my ac took it to the shop today had it flushed and they told me the cycling switch wasn’t putting power to the compressor he jumped the compressor just to show me it worked and it came right on blowing good cool air he gave me a part number of 1618 off some site. but can anyone tell me the actual name of that switch its the one on the drivers side behind the wheel well

I believe that is the high pressure switch.

I have also run into this problem this past month and diagnosed all easily accessible switches and fuses and everything checkout ok. I still bought an relay just in case as it seems that after i tested the relays, the system started working properly. either way i am glad it is working properly for now. it is hot here in Houston.