Thanks to NoddE for this information
Copyright © by MR2 Owners Club All Right Reserved.
If your going to put a T-piece where the stock oil pressure sensor is, make sure you get a T that has 1/8 BSPT. the stock sensor uses that thread.
The T should have one male BSPT (British Standard Pipe [thread] Tapered), one female BSPT and then for the aftermarket sensor a female NPT (National Pipe [thread] Tapered.
NoddE.Copyright © by MR2 Owners Club All Right Reserved.