my front headlights won't work on my 70 super bee. when i turn on the lights, the rears come on fine.

what is the best way to troubleshoot this problem. There is no high or low beams that come on in front.

bad ground, bad dimmer switch, bad dash switch. heck the ground 1st.... I'd unscrew the ground from the core support, sand and re-screw it. Then clean all the prongs on the lights and work you way back to the switch.

Is your wiring harness still follow all the original paths(as in has it been modified with headlight relays or anything)? Ma Mopar liked to run all the juice for the headlights in the stock wiring setup through the headlight switch and the dimmer switch so I'd start by checking the switches if you still have all the stock wiring. I'm switching over my 70 Charger with a repop year one dash harness and replacing the stock glass tube fuse block with a painless fuse block and relays to reduce some of that load on the dash harness.