There is a great thread about this on the samba which covers
everything, including where to  get the leds

On 3/9/11, Robert Stewart <robertmstewart@mac.com> wrote:
> Does anyone happen to know what kind of LED size and voltage I would need
> for the dash lights?
>
> I am want to upgrade the bulbs to led.
>
> Can you still use the dimmer with an LED?
>
> I am looking something bright but not distracting.
>
> Thanks,
> Rob
> NY
>