i just got into the k5's cause there always pullin out my jeep. i bought a 83 with an edlebrock 350, dana 60 in the front, corporate 14 bolt in the rear, np 205 t.c. and a sm465. im good with all the mechanical stuff but i cant find for the life of me what the lower headlights on the truck do. mine dont work and i want to know if there just high beams or if all four headlights do both high and low beams. i replaced them with new lamps but they still dont work so when i find out what they are i can look into it more. both my frinds with k5's lower light dont work either so they cant help me and i cant find anything online or in the repair manuals.