We just bought one and the dim lights are, well, dim. The bright lights are fine. But, you can hardly see with the dim lights. Are they suppose to be this way?
It sounds like an electrical grounding issue. Check the two headlamps' grounding wires. They attach to the body with small screws. They are located under the bonnet on either side of the spare tire well. Make sure the metal hasn't corroded under the screws/wiring connector. This should help.
Search Volkswagen Beetle Questions
Volkswagen Beetle Experts