Hardware & BigComm Software Instruction Manual

BigStuff3 Pro SEFI System
Version 2.1 – February 2011 17
Connector Clip
GM High Energy Ignition (HEI) Pin-out Detail
(For Distributors with External Ignition Coil)
BigStuff Harness Connector
Pin A Pin B Pin C Pin D
To distributor connector pin D
To distributor connector pin C
To distributor connector pin B
To distributor connector pin A
More GM HEI ignition wiring information is available on the Bigstuff3 website via this link:
http://bigstuff3.com/pdf/Visio-Small%20Cap%20HEI%20Drawing.pdf
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Connector Clip
Buick Direct Ignition System (DIS) Pin-out Detail
BigStuff Harness Connector
Pin A Pin B Pin C Pin D
To Coil Pack Connector B
To Coil Pack Connector C
To Coil Pack Connector B
To Coil Pack Connector D