Hmm, interesting theory, so is that just in the cop car gauges?
Cause I have never seen a tach delete in any 1967 B body gauge package, auto or stick, (unless home made), or is this just in the cop cars? Appears it should correct w/ parking brake light in it.
Would be interesting to see a police car pamphlet if GM even made the pamphlets....
I should look in my GM parts manual and see if there is part # for these gauges individual. I have seen other parts listed as police or taxi in the part books.