OER Tach or Tic Toc Tach Schematic anyone?

[Adam12]

I bought the Ebay special Tic Toc Tach. Ad said clock works tach doesn't. They were truthful, the board is roasted, OER does not sell replacement boards. Have searched the internet but come up empty, anyone else had a problem with one and taken it apart? check the picture.
No picture of the other side of the board but traces around the big grey resistor? and the red wire are pretty much missing. Thanks in advance.

part numbers on the circuit board 1277441 and 1277447 these are the same part numbers for the OER Mopar ralley Tach and tic toc tach View attachment 806060

On the OER clock tach where does the blue wire go coming off the circuit board?

 

[Adam12]

Where does the blue wire go coming off the tach circuit board?