• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


RPM Signal for Dyno

Messages
173
Likes
61
Location
Bear
#1
I'm in contact with a shop that I want to do dyno pulls from.

They said they need a RPM signal from somewhere in the engine bay for their dyno. I'm at a loss with this, some say use the coil pack 1 or 3 pin, others say you need a "tach adapter" can anyone confirm a RPM signal for me?
 


D1JL

7000 Post Club
Staff Member
Premium Account
U.S. Navy Veteran
Messages
7,928
Likes
4,189
Location
SFV, So.Cal.
#3
I used an Autometer Tach Adapter Model #9117.

You will need to cut the wire that supplies power to ALL four coils and insert the tach adaptor.
This wire can be found in connector C133 pin 5, the wire is Green-Orange, the connector is located next to the left headlight.
You will need to cut this wire between the connector and junction S108.
S108 is located on top of the engine and then branches to all four coils.


Dave
 




Top