The headlamp bulb is probably burnt out and easily replaced. The innards of lamps from that era were quite sturdy. If something else is broken/requires adjustment/brass contact requires cleaning, I have the same exact model and may be of assistance.

The tail lamp is original.
See my post here and look at the diagrams:
http://www.bikeforums.net/showthread...1#post13983796

Also see Sheldon Brown's article for a catalog illustration of your rear lamp (scroll down about half way):
http://sheldonbrown.com/dynohubs.html


Replace the tail bulb with this one:
http://www.compasscycle.com/lighting_led_tail_bulb.html

Headlamp bulb with the one on this page:
http://www.home.earthlink.net/~steinborn/gentlemancyclistmerchandise.htm

Don't change anything else, except maybe KoolStop brake pad inserts.

Phil Wood Tenacious Oil is highly recommended for oiling the hub, pedal, & bottom bracket oil ports.