X50A Engine Wiring Harness Junction Block X4

Courtesy of GENERAL MOTORS COMPANY

Connector Part Information Harness Type: Chassis OEM Connector: 33384574 Service Connector: 19371188 Description: 44-Way F 1.5, 2.8, 6.3 CTS, 9.5 MCON-LL Series (BK)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool
I	19369711	J-35616-14 (GN)	EL-38125-560A
II	84764078	J-35616-42 (RD)	J-38125-215A
III	84764079	J-35616-22 (RD)	J-38125-11A
IV	84779405	J-35616-35 (VT)	J-38125-215A

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
A1 - A2	-	-	-	Not Occupied	-	-
A3	0.75	GY / BN	2109	Trailer Park Lamp Control	IV	Z82-U1D
A4 - A5	-	-	-	Not Occupied	-	-
A6	1	VT / BK	339	Run/Crank Ignition 1 Voltage	IV	U1D
B1	-	-	-	Not Occupied	-	-
B2	0.75	WH / GN	1624	Trailer Backup Lamp Control	IV	Z82-U1D
B3	0.75	RD / GN	2440	Battery Positive Voltage	IV	Z95
B4 - B6	-	-	-	Not Occupied	-	-
C1	0.75	RD / BN	2940	Battery Positive Voltage	I	F47
C2 - C6	-	-	-	Not Occupied	-	-
C7	0.5	RD / WH	2040	Battery Positive Voltage	I	-
C8 - D1	-	-	-	Not Occupied	-	-
D2	6	RD / VT	1242	Battery Positive Voltage	III	-
E1 - E2	-	-	-	Not Occupied	-	-
F1	3	RD / BU	7640	Battery Positive Voltage	II	F47
F2 - G2	-	-	-	Not Occupied	-	-
G3	0.75	YE / GY	1618	Left Rear Trailer Stop/Turn Lamp Control	IV	Z82-U1D
G4	2	RD / YE	5840	Battery Positive Voltage	IV	U1D
G5	2.5	BU	3921	Diesel Exhaust Fluid Heater Control 1	IV	LM2
G6	2.5	RD / YE	1142	Battery Positive Voltage	IV	B3L
H1 - H2	-	-	-	Not Occupied	-	-
H3	0.75	GN / VT	1619	Right Rear Trailer Stop/Turn Lamp Control	IV	Z82-U1D
H4	3	RD / VT	5640	Battery Positive Voltage	IV	U1D
H5	2.5	RD / VT	1940	Battery Positive Voltage	IV	-
H6	2.5 4	RD / GN RD / GN	742 742	Battery Positive Voltage Battery Positive Voltage	IV IV	MBR -MBR