You can get the signal that is going to the Ecu. That's how I hook up my tachs. None of those you mention before are where you add tranny fluid. Take off your intake and look down from the top to where the right half shaft goes into the tranny. You will see a bolt next to where the half shaft is on the firewall side. Only a 17mm wrench or socket will fit. Bingo, add fluid until it starts leaking out and plug it back up, done.