I have searched quite a bit on the site and read up on the famous dimmer switch problems. After checking out numerous old posts, I still can not figure out my problem. 1970 40, all stock wiring. I am leaning towards dimmer switch, but am going to ask for help. The regular beams work fine, punch the dimmer switch down.....No high beams or any light at all coming out the bulbs. Hit the dimmer switch again....regular lights work. Any thoughts?? Thanks for your time. I have replaced the bulbs, fuses, cleaned all connections and the fuse block.