I believe the dimmer is part of the switch itself. Do you have a regular pull out headlight switch? If so, when you turn the switch, doe the panel lights dim? If I am correct, and it's been some time since I worked on a 78, the dimmer and the headlight switch is one part.
Let me know. Also, if you need help removing it, let me know.
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Saturday, December 5th, 2009 AT 7:18 PM