Dash Panel Issue

[Classics Fan]

Before I pull the dash panel in my 71 Jimmy I’m hoping someone has some ideas of what to look for to fix the problem I’m having.

When I bought the Jimmy in late 2018 it had an intermittent problem where, when the headlight knob was pulled out, the panel lights would go dim, the high beam indicator would illuminate when the headlights were on low beam (and would go out when they were out on high beam), and both left and right turn indicators would glow. In this condition when the turn switch was flipped in either direction the corresponding dash indicator would flash off and on (normal operation is the indicator is unlit until activated and then flashes). Until recently a rap or two with knuckles on the top front center of the dash panel would fix the problems. However this isn’t the case any more. All the conditions I’ve described are now constant and not intermittent.

My thought is either the printed circuit has a problem, there’s some sort of short in the circuit, or a bad ground. Anyone run into this before? Thoughts, ideas or suggestions?