oil pressure switch

[R32D2]

Just got an RB26DETT rebuilt and running.1990 GTR. May have a faulty oil pressure switch. Does anyone have a part number or replacement swap?
Thanks

[mold]

This is where I got mine.

http://www.z1motorsports.com/GTR/product_info.php?cPath=653_990_998_83002&products_id=3908

[93_jdm_fd]

Just for fun I removed my oil pressure sender, tapped out the gunk on my bench, sprayed some cleaner in the tiny hole and reinstalled. It has been working proper ever since. It still should replaced but for now it works. Mine would read 4-7 when cold then warmed up and at a cruise it would read 4, then stopped at idle it would read 2. Then sometimes it would read 0 and then come up a little and go back down to 0. I cleaned the sender and it reads normal when cold and between 2-4 at idle and cruise when warm.