Reviving this thread, so as to not start another one. I am about to install oil pressure and temperature gauges. I am planning to use the galley plug for temp, and the stock pressure sender location for oil pressure. My question is, can I just toss the stock sender and ground the stock sending wire? I don't want the oil pressure dummy light to be on all the time on my dash.
On the WRX the stock oil pressure dash light switch is a normally closed grounding switch that opens and breaks the ground when it senses 2.5 psi of oil pressure. Does anyone know if the FA uses the same type of switch?
This document is what gave me the idea