The necessary hardware can be purchased from an auto parts dealer, if not included with the oil pressure gauge. Choose a suitable location to mount the oil pressure gauge; mount the gauge so it is easily viewed while driving.
Common mounting locations for aftermarket oil pressure gauges include under the dash, on top of the dash, or set into the dashboard. Mount the gauge panel to the dash with a screwdriver and screws provided in the kit; set the gauge aside. This makes it easier to connect the wires.
Remove the oil drain plug from the oil pan with a wrench and drain the old oil into a oil catch pan. This is an opportune time to change the oil filter as well. 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.
Refer to the new oil pressure sending unit in the oil pressure gauge kit to help you identify the part. Connect the signal wire to the sending unit and run it through a grommet in the firewall in close proximity to the gauge. Run the wire through the gauge panel hole, or the pre-drilled hole in the dashboard, allowing extra wire for easy connecting.
Connect the signal wire to the post on the back of the gauge. Problems faster than an ammeter. Using an alternator with higher output capacity is dangerous and could cause a fire. After mounting the gauge the wire from the ground source step 4 should be connected. Car gauges car gauge kits custom gauges aftermarket car gauges car performance gauges gauge pods digital gauges air gauges fuel gauges oil pressure gauges temperature gauges performance gauges created date. Amp gauge wiring 1 always disconnect the ground lead from the vehicle battery before wiring any gauge.
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Strip part of the wire coating off of the oxygen sensor. Strip part of the insulation off of the oxygen signal wire from your gauge. Twist the oxygen signal wire from your gauge around the oxygen sensor wire in your vehicle. Wrap a piece of electrical tape around the wiring so that is covered. Route the negative wire from your gauge to a negative ground in your vehicle. An example of a negative ground is the negative terminal on the vehicle battery or a bolt on the frame of your vehicle.
You can wrap the negative wire around a bolt on the frame of your vehicle. Verify that the surface is nonpainted. If you would like to connect the negative wire to the battery, wrap it around the negative battery terminal. Put the negative plug of the battery on the vehicle battery and tighten the bolt using the wrench.
Turn on your car and test out the lights of the gauge. If they are working, proceed with a test drive to see the engine pressure. The gauge will change from lean to rich while driving, and this is normal. If the gauge is not working, retest the connections.
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