Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software - Manual (Page 23)

BigStuff3 Pro SEFI System
Version 2.1 – February 2011 20
BS3 2-by-2 IAC Connector Pin-out Identifier 4-by-1 In-line IAC Connector Pin-out Identifier
A D
B C
C B
D A
More IAC wiring information is available on the Bigstuff3 website via this link:
http://bigstuff3.com/pdf/IAC.pdf . Back_to_IAC
TPS (Throttle Position Sensor) – (Black, 3-way Packard connector)
The main harness TPS connector was designed to work with a GM “L98” style TPS. If a late model
GM or Ford TPS is being used, refer to the pin-out tables or the BigStuff3 website link below.
GM Late Model
BS3 3-by-1 TPS Connector Pin-out Identifier GM Late Model Round, “3-Point” TPS
Connector Pin-out Identifier
A B
B C
C A
Ford TPS
BS3 3-by-1 TPS Connector Pin-out Identifier Ford TPS Connector Pin-out Identifier
A C
B B
C A
More TPS wiring information is available on the Bigstuff3 website via this link:
http://bigstuff3.com/pdf/TPS.pdf . Back_to_TPS
Crank – [(Black, 2-way Packard connector with a separate ground wire (3/8” ring)]
The black Packard connector must be connected to the inductive pickup crankshaft sensor or
distributor (not supplied). The black wire ring terminal should be securely fastened to the engine
block. The GEN3 system is supplied with the sensor side mating
connector, terminals and seals. The table below shows the wiring
configuration of several commonly used crank trigger references. Other
crank trigger systems can be used, assuming the connections are properly
made.
Back_to_Crank