Hydraulic Brakes Connector End Views

Brake Pressure Differential Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052646 ASM 2F Metri-Pack 150 (WHT)
Pin	Wire Color	Circuit No.	Function
A	TAN/WHT	680	Brake Pressure Differential Switch Signal
B	BLK	150	Ground

Park Brake Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12004267 1F 56 Series Lock Type (BLK)
Pin	Wire Color	Circuit No.	Function
A	LT BLU	1134	Park Brake Switch Signal

Electronic Brake Control Module (EBCM) - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12065425 10 Way F Metri-pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BRN	441	Ignition 3 Voltage
B	LT GRN	867	ABS Indicator Control
C	PPL	420	TCC Brake Switch Signal
D	BLK/WHT	1695	Axle Switch Signal
E	YEL/BLK	1827	Vehicle Speed Signal
F	TAN/WHT	33	Brake Warning Indicator Control
G	PPL	1807	Class 2 Serial Data (Primary)
H	TAN/WHT	680	Break Pressure Differential Switch Signal
J	BLK	451	Ground
K	-	-	Not Used