2-88 white oil pressure light

Anonymous-0

Well-known Member
The light and buzzer stays on all the time the key is on. I have checked with a gauge and I have plenty of pressure. Where is the sensor for the light or what could be the problem? Thanks
 
"Where is the sensor for the light"

Same place as for the buzzer; they are the same switch and located into the main oil gallery. You may also have a short circuited wire.
 
   This is a very simple circuit and easy to trouble shoot.  Voltage is fed to the light bulb and busser anytime the switch is in the "on" position.  They seek ground through the wire leading to sensor.  The sensor is a normally closed sensor.  When the sensor gets pressure at a predetermed setting it changes to open circuit, thus the ground goes away and the bulb goes out and buzzer on longer sounds.  Turn on the switch and remove the wire from the sensor and the light buzzer should stop.  Should it continue to sound the wire has lost it's insulation somewhere and had now found a path to gournd.  If it stops sounding the problem is the sensor.
 

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