68 some lights

[Rev]

Sixtystyle is right on this. The only thing I would add is a possible short circuit some where on the way to the tail lights. Rusty sockets would be my first inspection though.

Rev

[red]

My car does this too. Everything is nice and bright as long as the engin RPM's are high, but when I come to a stop the dash lights dim and turn signal slows down. I think it is kinda cool, just a unique feature of an old car. I always though swithing to a solid state voltage regulator solve this. Might be worth trying one of those one wire alternator conversions.