just pop them up and all u need is a screw driver.
- take the plastic cover off that surrounds the light (2 or 3 screws each side)
- unscrew the chrome frame that holds the glass in
- pull the whole thing out, unplug it at the back
- now with the glass inclosure out, pull the rubber cover off the back
- under the rubber cover is a metal ring that you turn until it lines up with the slots then pull it off
- the bulb should be loose now
- put new bulb in, without touching the glass.
- now do all that backwards
lol its just one of those jobs where you just keep pulling stuff off till you figure it out. Its really easy man.
u know how to use a testlight? just earth the clip and prod, if the light comes on, therz current at that curcuit, just give it a prod around, see were u can find power, and if u find no current in one curcuit, trace it to were the break is, coz its parrallel curcuit, not all lights will fail if one does.