My question is kind of similar; can I connect two wires to my oil pressure sending unit, one for the efis anf the other for a traditional round oil pressure guage? I want to see oil press. right away, the way mine is set up now is once engine start happens I have to boot up the efis before I see oil press., sometimes the efis will error on boot up and I have to recycle it, thus I will see a delay in seeing if I have oil press.