Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI (LS1) System Hardware & BigComm Software - Manual (Page 9)

BigStuff3 Pro SEFI System (LS1)
Version 1.0 8
Harness
Label
Wire
Color/Connector
Type
Label
Definition
Connect To Further Details
Boost Black 4-way
connector with an
orange seal Staged or
PWM Boost
Control Connects to
optional 4-way
connector to
solenoid or PWM
boost valve Boost
LS1 Cam Black, 3-way
Packard connector
with a purple seal Camshaft
Position
Sensor Input Connect to the
stock LS1
camshaft position
sensor located on
the back of the
engine block Cam
H2O Black, 2-way
Packard connector
with a light blue
seal. Engine
Cooling Fluid
Temperature
Input Connect to the
stock LS1 coolant
temp. sensor. Coolant_Temp
Air Gray, 2-way
Packard connector
with a light blue
seal. Engine Intake
Air
Temperature
Input Connect to the air
temp. sensor
typically located
in the air intake
duct between the
air cleaner and
the throttle body Air_Temp
IAC Black, 4-way
Packard connector
with a light blue
seal. Idle Air Speed
Control (IAC)
input Connect to the
IAC motor assy.
located on or near
the throttle body. Meters and controls
intake air around the
throttle blades at idle and
during cold starts.
IAC
TPS Black, 3-way
Packard connector
with a purple seal. Throttle
Position
Sensor The TPS located
at the end of the
throttle shaft on
the throttle body Senses the position of the
throttle blades [0%
(throttle closed) to 100%
(throttle wide open).
TPS
MAP Black, 3-way
Packard connector Manifold
Absolute
Pressure
Sensor Connect to the
stock MAP sensor
located on the
back of the
manifold MAP
Injector Black, 10-way
Packard connector Injector
harness
connector Connect to main
wire harness Injector_Harness
LS1 Coils
Even & Odd
Light gray 7-way
Packard connectors
with an orange
seals
Even (2-4-6-
8) & Odd (1-
3-5-7)
cylinder bank
coils
Ignition coil
connector on the
Even (2-4-6-8)
and Odd (1-3-5-7)
cylinder banks. LS1_Odd_and_Even_Coi
l_Connections