gone over this before, but maybe has someone has some new ideas....
my 69 RS has the 396/375 w/console guages Tach(my car was orginally a RS V-8 Van Nuys car, no stinking codes), now with a well-worked 350), so it's probably aftermarket. It's a TH350, so no big rush, but it annoys me it isn't working...the tach wire is connected to the coil. I pulled the tach out out and can't see that anything is disconnected, but only one main thing is attached to it anyway so there isn't much to be disconnected anyway.
I know the OER RS headlight switches are problematic, are the OER tach's also troublesome?
Formers: 1969 RS 350, 700HP 1967 Flash-in-a-pan Firebird 400, 2002 Z28 M6 1SC/1SZ