Electric oil pressure gauges are easy for a DIY mechanic to install, whether you want to replace a faulty oil pressure gauge or a custom aftermarket look. Oil pressure gauges are designed to inform the driver when the oil drops below a safe operating level or when the oil pressure is too high. Driving a vehicle without an oil pressure gauge can lead to catastrophic engine failure. Most oil pressure gauges come with mounting panels and the necessary installation hardware. The necessary hardware can be purchased from an auto parts dealer, if not included with the oil pressure gauge.
Step 1: how to install an oil pressure gauge
Choose a suitable location to mount the oil pressure gauge; Mount the meter so it can be easily seen while driving. Common mounting locations for aftermarket oil pressure gauges include under the dash, on top of the dash, or placed in the dash.
Step 2: how to install mechanical oil pressure watch
Mount the indicator panel on the dash with a screwdriver and the screws included in the kit; set the meter aside. This makes connecting the cables easier. If you mount the meter to the dash, drill a hole in the dash 1/8 inch larger than the size of the meter.
Step 3: how to install oil pressure gauge
Remove the oil drain plug from the oil pan with a wrench and drain the old oil into an oil collection container. This is an opportune time to change the oil filter as well.
Step 4: how to install a light meter
Remove the old oil pressure sending unit with a ratchet and socket; The oil pressure sending unit is shaped like a cylinder and is usually located near the oil filter. See the new oil pressure sending unit in the oil pressure gauge kit to help you identify the part.
Step 5: how to connect electric oil pressure gauge
Connect the signal cable to the sending unit and pass it through a grommet in the firewall very close to the meter. Pass the wire through the hole in the gauge panel or the pre-drilled hole in the dash, allowing additional wire for easy connection.
Step 6: install oil pressure gauge
Connect the signal cable to the post on the back of the meter. The signposts are marked for proper cable installation.
Step 7: installing electric meters
Run a power cord from a 12-volt switched-mode power source, such as a cigarette lighter, dome light, radio, or fuel pump, to the meter’s power post. The power supply must be on and off with the ignition.
Step 8: electric oil pressure gauge
Run a ground wire from the chassis of the vehicle to the ground post on the meter; a bad ground can result in an inoperable indicator or a false reading. Use an existing washer on the firewall or drill a hole in the vehicle body and route the cable to the chassis or frame.
Step 9: how to install pressure gauge
Mount the meter to the meter panel, or to the hole in the dash, with the mounting hardware supplied in the kit.
Step 10: install oil pressure gauge
Install the oil pan drain plug and fill the engine with oil. Start the engine to verify the operation of the indicator.
Items you will need
- Electric drill