My '98 +4 instrument lights vary from nil to bright in roughly the top 1/8th of the 'rheostat' travel.
Can't see the indicator repeaters in bright sunlight (Colin, previous owner, did fit an audible indicator though), so I'm toying with replacing them with LEDs. Just changed the instrument lights on the 90 with LEDs - much better (mind you, half of the bulbs had expired!).
Cheers,
