Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software User Manual
Page 31
Switched 12V Source in the Vehicle
Foot brake Switch
(12V applied to this wire
when foot or trans-
brake button is
depressed)
Brake
Lights
BigStuff3 - Data Log Trigger & Timer Enable - Wiring Diagram
Off Foot Brake & Trans-brake Switches – With Optional 2-Step & 3-Step
C
D
B
Boost Connector
from Main
Wire Harness
A
Relay
86
30
85
87
87a
Wire used to Activate the “Timer Enable”
Ground
Optional Dash Mounted
ON/OFF Switch to turn
the “
Timer Enable
On
and Off.
This Switch is
Required with Optional
SR2 System
To “Boost” Connector Pin A
Trans brake Button
(12V applied to this wire
when trans-brake
button is depressed)
On/Off Switch
(required) for
Data Trgger wire
Trans
brake
GEN3 ECU Header 2 - Terminals L - Y
Row 1
Row 2
Row 3
L
M N
P
R
S T
W X Y
To Hdr 2, W1
To Hdr 2, Y2
GEN3 ECU Header 1 - Terminals A - K
Row 1
Row 2
Row 3
A
B C
D
E
F
G
H
J
K
Yellow 2-Step Wire in
To Hdr 1, B2