Does anyone have a Spa Tach wiring diagram?

[Draksia]

I have an older spa 15k rpm tach with integrateted shift light and digital display. It came from a old car that didn't have a complete wiring system so the pin out for the tach is now lost. I was wondering if any one had a wiring diagram for this tach. It has 10 pins on the back as well as a 4 pin connector that is covered up. I would really like to use this tach so if some one could help me that with a wiring diagram I would be greatful. Spa has not returned any emails so I have given up hope that they would help.

Thanks

[Draksia]

I have an older spa 15k rpm tach with integrateted shift light and digital display. It came from a old car that didn't have a complete wiring system so the pin out for the tach is now lost. I was wondering if any one had a wiring diagram for this tach. It has 10 pins on the back as well as a 4 pin connector that is covered up. I would really like to use this tach so if some one could help me that with a wiring diagram I would be greatful. Spa has not returned any emails so I have given up hope that they would help.

Thanks