What is the correct fan to radiator clearance?

Mattax said
probably should start a different thread.
Explain what you mean by ground screw.
This is the similar '67 Rally dash. Each of the illumination lamps has a ground to the casting.
The casting had a supplementary ground wire that attached to the dash panel where the radio support mounts.
View attachment 1716163642

I expect '68 is similar.
Click to expand...
That's the screw that's stripped. Put a larger one in its place but voltage limiter still wants to come loose. Will try a star washer. Limiter must go there due to length of the +12 and output wiring. Have been careful not to over tighten. Think it was weak to begin with.