Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software - Manual (Page 19)

BigStuff3 Pro SEFI System
Version 2.1 – February 2011 16
To Negative Coil Lead or Points Input on Ignition System
Connector Clip
Top
To BigStuff Connector Pin B
To BigStuff Connector Pin A
Not Used
+12V Switched Power supply Ignition run and start
To BigStuff Connector Pin D
Ford Thick Film Ignition (TFI) Pin-out Detail
Note: BigStuff Connector Pin C is not used with the Ford TFI Ignition
HEI Connector
on Main Wire
Harness
A B C D
Ford TFI Spout PIP Not Used Ground
GM HEI EST REF HI Bypass DIST RTN
Buick DIS EST REF HI Bypass DIST RTN
GM Optispark EST LOW RES Not Used DIST RTN
GM Northstar DIS EST Crank Ref Bypass DIST RTN
More Ford TFI ignition wiring information is available on the Bigstuff3 website via this link:
http://bigstuff3.com/pdf/Ford%20TFI.pdf .
Connector Clip
GM High Energy Ignition (HEI) Pin-out Detail
(For Distributors with Ignition Coil in the Distributor Cap)
BigStuff Harness Connector
Pin A Pin B Pin C Pin D
To distributor connector pin A
To distributor connector pin B
To distributor connector pin C
To distributor connector pin D