The oil pressure sensor remember a pressure sensor varies a voltage signal based on a fluid or gas pressure.
3 wire oil pressure sensor wiring diagram.
The oil pressure sensor is located on the top of the motor drivers side at the rear.
You can jump any of the three wires to keep the compressor in good condition.
According to expert maintenance tips it is essential to follow the previous readings in mind.
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If i member right the oil pressure.
Here are the instructions on how to wire an oil pressure gauge.
The oil pressure sensor is in the bottom right corner of the diagram.
The oil pressure sensor is from the 99 5 7 vortec the rest of the harness is finished.
The connection sends 0 5 volts of pressure to the pcm fuse.
You have to bypass 3 wire ac pressure switch from b1 to b4 to power up the compressor clutch.
They can come in all different technologies such as inductive photoelectric and capacitive just to list a few although the sensor technology may differ all 3 wire sensors are wired the same a three wire sensor has 3 wires present.
Key on check the voltage of the grey wire.
A switch is on or off like a oil level switch.
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You should have 5 volts key on engine off.
After a lot of head scratching i noticed how easy the needle moved in one direction but not the other my eyes are not great on anything close up but with my bestist glasses i could just see the pin on the bimetallic strip had come out of the slot in the needle base.
I need to know where the 3 wires go.
To wire an oil pressure gauge make sure to get a copy of the wiring diagram for the specific brand and model of the device the manual usually comes with the purchase but the manual can also be downloaded from the manufacturer s website.
You can use that for a relay trigger or for an electric choke or any other thing you want.
The voltage signal is sent to the pcm and then to the cluster to the oil pressure gauge.
Anyways the 3 wires are orange tan and grey.
Three wire sensors are used in various applications from detecting parts to locating position of the actual machine.
The harness was cut when i got it.
Update spent awhile following the schematic and i had all the right power in all the right places but the gauge was not moving.
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I had mine set up to use that however i buggered up the plug above the oil filter and now i need a 3 wire because i only have one hole now.
It came with every other wire just not the 3 wire plug wiring for the oil pressure sensor.
Fuck me running.
I have a 87 s10 with a 99 5 7 vortec engine harness.