I'm running the dash ones on a dimmer, of course they're dimmer. If I had them full pelt I'd be blinded
You can run the 2 LED's on the limit by only using a 400ohm resistor with them (too bright at 13000mcd) then use the dash dimmer to reduce intensity (if you've got one fitted)
Running 2 LED's in parallel with a 1Kohm resistor you get a fairly good brightness, you can definately make out all the relevant info.
Also a thing to note with the A/C, the bulbs for the LCD screen are actually 5v while the buttons are 12v still run the 1Kohm resistor with them though, as the screen is more transparent and lets more light through...it works out pretty even colour distribution.