73 Valiant Intermittent Headlight Issue

Losing Headlights driving down the road is rough~! I have read several posts concerning electrical issues with headlights etc. Many reference the Bulkhead through the firewall and so on.
I found another post here with the same issue but decided to begin a new thread dealing with what I have found so far.
Mine acts like a heat switch on an electric space heater - On then after about 30 mintues of driving suddenly off - Back on a few seconds later and back off again seeming almost steadily * at least initially - gets worse when continuing to use them On/Off more frequently.
From posts have read something about a breaker *(in the headlights<the way I read) OR is this 'breaker' in the headlight swtich? OR Both? Overheating can also cause a 'breaker to cycle on and off?
Removing the Dash- I find a severely burned Headlight switch connector. Block is melted badly.
My investigation revealed a loose blade on the swtich (H- designation) From what I have seen this powers the headlights so it would make sense that the headlights were going out intermittently.
*(Still wondering about a short though?) _ maybe a short causing the wire to heat up and burn out the switch... **ALTHOUGH- I got a New one Echlin switch - thinking this is a quality part and the same terminal is loose.
Could the defect be repaired by soldering the contact?
I already ordered another one *(Curious to see if the same blade is loose on the switch...
I have been reading posts here for some time and this has been VERY helpful- so much information on here~ Thanks to all who participate on this site~!