69 273 headlights wont turn on

he didnt show me anything, he ran a lot of different test, dipped something into the liquid of the battery.
Perhaps a hydrometer. It measures density of the battery acid. That's a good indicator of the condition of each of the battery cells.
Since we don't know what the other tests were, its hard to guess. It's possible he put a load on the alternator to test its output. We can come back to the alternator in a bit.
Im not sure what you mean by trace or hand it off with the parking lights. im not gonna pay someone one to fix that. i would like to fix it myself,
That's exactly what I was asking. If you're paying this guy to do more electrical work, then I didn't want to be in the middle and I don't think it would have helped in any way.
By tracing I mean narrowing the problem and then following the wires to the source of the problem. Sometimes that means physically following the wires but usually we can use the diagrams and some tools to figure out where each one connects.

but i don't know where to begin, where even the parking light button. Or was it because the door was open ?
Fine. Lets begin with these two.
The headlight switch is a multi-function switch.
On a '69 Dart the parking and tail lights should be on when the switch is pulled out to the first and second position. Pull the knob to the second position the headlights should also turn on.
In either position oine or two the instrument and radio lights should be on. Rotating the knob will make the instrument and radio lights brighter or dimmer.

With the knob pushed all the way in, all lights should be off.
In any position, rotating the knob until it clicks will turn on the dome light and any other similar lights. Remember to turn them off if you turn them on that way!

Opening either door will also turn on the dome light and any similar lights.