: if you have the same wiring set up in back disconnect only those wires that go to the BOTTOM of the cluster that lights up the FRONT projected lighting. Do not remove any bulbs. You need the regular lighting to light up the needles. Also take out the 3 screws that hold the tach on and remove it( it's easy) to put the oil pressure gauge face in, and while your at it use black touch up paint to paint that little tray edges that the oil press face sits in to help block out the regular lighting.