Hello!

In process of adding at Oil pressure gauge to my 77 20r and had a few questions.

1) is the stock oil pressure switch 1/8 BST or NPT? I have the adapter and both seem to thread easily and I haven't forced either past a few threads.

2) If I was to eliminate the OE switch what would I need to do to fake pressure just ground the wire? I saw somewhere that circuit is the same as the fuel pump, not sure how accurate just trying to find best option and not make this harder than it needs to be. also possible I can get a T fitting just not sure if it would all fit.

Thanks!