Tach and dakota dash ??????

[smoke20]

just bought a dakota dash have tach hhoked up to green connector, they ask if it a 5 volt low or a 12 volt high eather way i have no tach reading any sugg?

 

[87GNSteve]

You might need this:
http://www.casperselectronics.com/store2/product_info.php?products_id=598