Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software User 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:
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