Headlight fuse.

[chrger1967]

I was checking out why I’m not getting 12 volts at my headlights. The turn signal and parking lights do work, and Im getting a clicking with the headlights on, like the motor is trying to work. I could not find a fuse on that circuit with a wiring diagram. Is it maybe with the hide away headlight relays?

 

[Slotts]

You won't find a fuse for the headlight bulbs! The safety feature is the headlight switch. Inside is a 20 amp circuit breaker that is able to reset. Think about driving at night and a fuse, if it were in line blew, now more headlights and a crash is not far from happening.

 

[bcOH67]

Could be a number of reasons you’re not getting 12v at the bulbs. Are you getting it other places even if the lights are working? Voltage problem is why myself and I’m sure a lot of others purchased crackedback’s headlight harness kit. Easy install and great design with taking stress off the bulkhead. Where do you hear the clicking coming from?

 

[Don Frelier]

You won't find a fuse for the headlight bulbs! The safety feature is the headlight switch. Inside is a 20 amp circuit breaker that is able to reset. Think about driving at night and a fuse, if it were in line blew, now more headlights and a crash is not far from happening.

Start by unplugging the headlamps.
Then test at the plugs see if you get 12 volts or if the breaker still trips on/off.
This circuit also feeds the tail lamps so the problem could be in the rear section as well.
But you need to narrow down the source of the problem.

There is likely a pinched wire somewhere or the circuit breaker within the switch is tripping too easily.
The headlamps themselves are typically either good or bad (open circuit).

 

[twecomm]

As Don suggested, disconnect the headlamp connectors at the headlamp buckets on either side of radiator and check to see if you are getting voltage at the connector with headlights turned on. The clicking you are hearing could well be the thermal circuit breaker for the headlight motors. That circuit breaker on a 66 Charger is located behind the drives side kick panel, think it's same for a 67. If your motors won't turn, it could be a problem with the motors themselves or, bad limit switches for the rotating headlamp buckets or relays that control them. The headlamp motor connectors are not the same connector as the headlamps themselves. If I recall, as others have indicated there is no fuse for the head lamps. The wiring for the headlamps do go through the bulkhead connector, so that's another place to check for voltage to the headlamps.
It's not totally clear to me if your headlamps are in the open or closed position. In either condition, the lamps should light. I would not suggest that you try to manually rotate the headlamp buckets while physically connected to the motors as the planetary gearing in the motors is a plastic type material and you can strip the gearing by forcing rotation by hand.
A wiring diagram for your car is your friend here. You will just need to trace out from the headlamp switch to find the fault