[Lynn]

Got the tach back out. A lot easier the second time around.

It is going to be impossible to adjust on the fly unless I drill a small hole in the side of the back housing.

Sent Greg a question, asking about the inline resistor on my black wire. He said he hasn't seen one with a resistor. Hmmmm. Looking at the pics of Dave's disassembled tach, I notice his does not have a resistor.

I am wondering if this was a fix at the factory to calibrate, and someone over did it with the resistor.

Check out the pic on mine. Definitely a resistor in line on the black wire, and it does not looked hacked. Looks factory. There was a time I could tell you the value on that just by looking at the bands, but that has been almost 50 years ago! I can either look it up or just measure it with an ohm meter.

Also asked Greg if it makes a difference that my tach is an 8k tach, and the potentiometer has "7k" written on it.

Will report back.