Help Finding Tach Wire On 08 PSD

[Powerstroke 6.4]

Well heres my questions does anyone know what pin at the pcm the tach wire is or can I just find it in the harness behind the cluster and what color it is. I need to find a tach reference for my NOS controller # 15975NOS Im trying to do it with out using a tone ring on the alternator. The other thing is does any one know what pulses it is 4 or 8 Im thinking its goin to be 4 but again not sure

Thanks

 

[Wayne]

Looks like the signal goes to the cluster through the DLC cable, so it's not a clean signal. The connector you're looking at should be by the coil spring tower on the driver side of the engine compartment. Pin # 25

 

[Powerstroke 6.4]

Thanks for the info

I have not tried it yet but will let you know if it works