Quote:

my lens is cracked. Im not sure what "sealed beam" refers to.



Bulb, reflector, and lens in a solid unit.

The later (after '05?) came with a sealed beam from the factory. Not very bright, low beam next to useless. You can replace it with one from the auto parts as mentioned above. The only difference, besides better lighting, is the loss of the parking light feature (turning the key past off, illuminating the tail light and a feeble light from the headlight).