[dvcarrporsche]

I have been searching forums and I'm stuck on how to wire up my tach. I'm looking to see if anyone has ideas or has encountered this problem. Perhaps I'm mis interpreting the instructions.
I have a 82 SC, my engine is rebuilt, and I am installing the Bitz EFI kit with a MSD 6A 6201 ignition controller.
Before I got into wiring for the Bitz kit, this car had a permatune CDI box that and some of the wiring for this was hacked up. The harness connector was hard wired. I think I figured out all of the wiring except how to hook up the tach.
Maybe I'm interpreting the instructions incorrectly, but it seems that the MSD and Bitz tach wiring instructions are conflicting.
In the Bitz instructions, the Megasquirt Blue wire needs to connect to the Tach output, which is the black & purple line from the tach.
The MSD box has a Grey Tach output wire. Is that supposed to hook up to the Tach black and purple output?
I'm stuck.