I have a 1971 FJ40 and my headlights have stopped working. All other parking/marker/tail lights are working, just not my headlights. I know absolutely nothing about the electrical aspect of vehicles. I thought to check and test the fuses and fuse block. I am using a test light and have power to the top 3 fuses but not the bottom 3. I took the fuse block off and cleaned all of the connections and still have the same problems. The wire that leads to/away from the bottom half of the fuse block (single wire on the lower right side in the picture) is black with a white stripe. Can anyone tell me if the headlight problem and the lack of power to the bottom 3 fuses are related? And if so, how do i fix this problem? Also, by description, can someone also tell me how trace this black/white wire and where it may go? Sorry for the remedial questions but I really have no clue. Any help is greatly appreciated. Thanks in advance.