i have tried the dimmer switch, took the wires out and bypassed the dimmer switch but still no luck.
craig taking the dash off is really simple, 3 t-20 screws on top of the dash on the heater vents and 2 on the side of the dash when you open the doors. The top just pulls off and you can see the clocks exposed. Undo the 2 screws on the top of the clocks and there is 2 others below that you need to get at from underneath. It sounds daunting but its really simple, the hardest thing i found was gettin the spedo cable from the back of the clocks. To do this you just squeeze the white round plug and it should pull off.
Hope that helps craig