Sun Tach in 72 Scamp

On my old '69 340 Swinger back in the early '70s I mounted my tach at the top of the A-pillar using a couple of the shoulder belt buckle attaching plate screw holes.
Sorry, no pics.
The only problem was the one time I got pulled over with the police officer claiming it obstructed my vision (it didn't).
It was just a no-fine "fix-it" ticket. So before I went to the local police department to get the ticket cleared, I wired in a quick-release plug into the wiring. After getting the ticket cleared I pulled out of the police station parking lot, took the tach out of the glove compartment, plugged it in and put it back up on the attaching plate.
It was in a great location and extremely visable.