fummins tach question

[GRU]

in my truck i swapped my cummins in, the 92 dually, i need to get the tach wired up. i bought a dakota digital interface that uses the alternator as its signal source. problem is, my truck came to me with the engine removed along with its harness. i have absolutely no idea where the tach wire plugs into the chassis harness at! can someone please help me out identifying what plug this goes to? thanks in advance!

 

[Cablewh]

I did a 12v swap into a 96 f-250 . If I rember correctly the tach wire is pink with a white stripe .. Call the guys @ Fordcummins , they are very helpful . 406-755-8878 good luck