Oil/boost gauges - Off top of my head, take off plastic that holds rear demister, etc. think its a couple of screws by the ashtray then unclips off. Take off ignition barrel cowling. Then take off the trim with the middle heater vents that goes around the speedo. The middle heater vent has a cable behind it that leads down the back of the heater controls, you have to undo this down in the drivers footwell. Get a torch up there then waggle the middle heater lever to see what I'm on about. When that trim is off, there are four bolts holding the unit in. Take these out, pull out the unit and you will see the bulbs in the back.