Temperature Indicator
CAUTION:
Never apply 12 volts directly to sending unit and be sure oil pressure sending unit lead is disconnected and not touching ground.
If light remains on with ignition "ON", remove lead to sending unit. Connect an ohmmeter between sending unit terminal and engine (ground). If meter reads infinite, sender is OK. If meter reads zero, replace sender. If light is off with ignition in "START", check bulb and/or check for an open circuit between sender, bulb, and ignition switch.