I'll have to check, but I believe that the dimmer only adjusts the cluster illumination. The dimmer is connected to the cluster itself by two pushon lugs under the rheostat, no external wires at all on there.

The vent, headlamp, console, and shifter bulbs are #73 Sylania "wheat" bulbs, really tiny and only a couple watts each.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!