Fuse Block - Underhood X3 Connector End View

Fig 1: Fuse Block - Underhood X3 Connector End View

Courtesy of GENERAL MOTORS COMPANY

Fuse Block - Underhood X3

Pin	Wire	Circuit	Function
A1	0.35 PK	1639	Ignition Voltage
A2	0.35 RD/WH	2840	Battery Positive Voltage (8S8)
A3	0.8 RD/WH	2240	Battery Positive Voltage
A4	0.8 RD/WH	3040	Battery Positive Voltage
A5	0.5 RD/WH	2540	Battery Positive Voltage
A6	-	-	Not Used
A7	0.8 RD/WH	2740	Battery Positive Voltage
A8	-	-	Not Used
B1	3 RD/WH	3940	Battery Positive Voltage (UY7)
B2	0.35 PK	1139	Ignition Voltage
B3	0.35 PK	1139	Ignition Voltage
B4	0.8 RD/WH	1040	Battery Positive Voltage
B5	1 BN	2109	Trailer Park Lamps Control (UY7)
C1	0.35 PK	239	Ignition Voltage
C2	0.5 PK	2239	Ignition Voltage (JL4)
C3	-	-	Not Used
C4	0.35 OG	5186	Left Trailer Turn Signal Lamp (UY7)
C5	1 BN	2109	Trailer Park Lamps Control (Cutaway)
C6	1 D-GN	619	Right Rear Turn Signal Lamp Control (Cutaway)
C7	0.8 D-BU/WH	149	Courtesy Lamp Control (Cutaway)
C8	1 YE	618	Left Rear Turn Signal Lamp Control (Cutaway)
D1	0.5 OG	228	Windshield Washer Pump Control
D2	0.35 YE	5199	Run/Crank Relay Coil Control
D3	1 L-GN	1624	Trailer Backup Lamps Control (Cutaway, UF7 or 8S8)
D4	3 D-BU	47	Trailer Auxiliary Control (UY7)
D5	-	-	Not Used
E1-E2	-	-	Not Used
F1-F2	-	-	Not Used
G1	0.8 RD/WH	640	Battery Positive Voltage
G2	0.35 OG	2268	Windshield Washer Relay Control
G3	0.35 YE	5187	Right Trailer Turn Signal Lamp (UY7)
G4	2 PU	92	Windshield Wiper Motor High Speed
G5	2 D-GN	95	Windshield Washer Switch Signal
H1	-	-	Not Used
H2	0.5 RD/WH	3840	Battery Positive Voltage (except LU3 or LMF)
H2	1 RD/WH	3840	Battery Positive Voltage (LU3 or LMF)
H3	0.35 TN	28	Horn Relay Control
H3	0.35 TN	28	Horn Relay Control
H4	0.35 PK/WH	1970	Headlamp Low Beam Relay Control
H5	0.35 PU	544	Headlamp Low Beam Control
H6	0.35 GY	91	Windshield Wiper Switch Signal 2
H7	0.5 WH	5065	Stop Lamps Control
H8	0.35 TN	860	Front Windshield Wiper Switch High Signal
J1	0.8 RD/WH	640	Battery Positive Voltage
J2	0.8 RD/WH	2940	Battery Positive Voltage
J3	0.8 BN	2309	Front Park Lamps Control
J4	0.8 D-BU/WH	1315	Right Front Turn Signal Lamp Control
J5	-	-	Not Used
K1-K2	-	-	Not Used
K3	0.8 RD/WH	2140	Battery Positive Voltage
K4-K6	-	-	Not Used
K7	0.8 L-BU/WH	1314	Left Front Turn Signal Lamp Control
K8	0.35 TN/WH	1969	Headlamp High Beam Relay Control

Connector Part Information

Harness Type: Instrument Panel
OEM Connector: 15477822
Service Connector: 19115189
Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)

Terminal Part Information

Pins: A1-A5, A7, C1-C2, C4-C8, H2-H8, K3, K7-K8
Terminated Lead: 13575735
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-2A (GY)
Terminal/Tray: 12191812/19
Core/Insulation Crimp : Pins: A1-A2, A5, C1-C2, C4, H2, H4-H8, K8 - E/C
Core/Insulation Crimp: Pins: A3-A4, A7, C5, C6-C8, H3, K3, K7 - C/A

Pins: B2-B5, D1-D3, G1-G3, J1-J4
Terminated Lead: 13575753
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-4A (PU)
Terminal/Tray: 15304711/8
Core/Insulation Crimp: Pins: B2-B3, D1-D2, G2-G3 - E/A
Core/Insulation Crimp: Pins: B4-B5, D3, G1, J1-J4 - 2/A

Pins: B1, D4, G4-G5
Terminated Lead: 13575754
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-4A (PU)
Terminal/Tray: 15304713/19
Core/Insulation Crimp: Pins: B1, D4 - F/D
Core/Insulation Crimp: Pins: G4-G5 - 4/4