You can go around with the light switch on and feel the connections (even at the firewall junction block), back of the headlight switch etc. If you find a connection that is hot not making good contact, then that is part of the problem.
With the light switch on , i felt around the places mentioned above and more . most were not hot . The only place that felt hot was at the headlight connector , behind and attached to the headlight . some heat there . drivers side . i could not get my hand behind the other one to check that .
