i think i may have jumped the gun, a little. apperantly you can't get the pots with the bulb anymore. but you can still buy the hi/lo sealed beam for them. that is the 4 lamp system. maybe that bulb would fit into you old pot . you may have to bend the ears back on the light a little to make fit depending on you old pots. if this works, you have high & low beam lights in your original pots. a piece of black 3 wire extension cord should work well for wiring.