diesel oil light

[tonytolle]

Originally Posted by COLVERT

Just curious-----is the oil pressure switch a normally closed switch which is opened by oil pressure once the engine is running ? ( thus switching off the dash light. )

Yes Colvert I believe it is ,as most are, but I can't ascertain whether or not the ECU needs to see this earth path ,in order to start the engine or if I can diss this wire and replace it directly with one going to an ignition powered lamp on the dash.