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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Power and Grounding Connector End Views
Connector 1: Emergency Vehicle Roof Lamp Relay (5Y0)
Connector 2: Ignition Switch
Connector 3: Roof Beacon Relay (TRW)
Connector 4: Roof Beacon Switch (5X7/5Y0/TRW)
Connector 5: Trailer Connector (UY7)
Connector 6: Wrecker Relay X1 (5X7)

Emergency Vehicle Roof Lamp Relay (5Y0)
Object Number: 535912 Size: CH

Connector Part Information

  • OEM: 12129716
  • Service: 15306045
  • Description: 4-Way F Metri-Pack 280 Series (GY)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Emergency Vehicle Roof Lamp Relay (5Y0)

Pin

Wire Color

Circuit No.

Function

30

3 RD/WH

2340

Battery Positive Voltage

85

0.5 BK

1050

Ground

86

0.5 WH

5990

Emergency Lamp Switch Signal

87

3 D-GN

540

Emergency Lamp Relay Contact Control

Ignition Switch
Object Number: 1664590 Size: CH

Connector Part Information

  • OEM: HCMPB-C06-K
  • Service: Servise by Harness - See Part Catalog
  • Description: 6-Way F HCM Series (BK)

Terminal Part Information

  • Terminal/Tray: SHCM-A0ST-P025/20
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)

Ignition Switch

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

0.35 PK

3

Ignition 1 Voltage

3

0.35 BN

4

Accessory Voltage

4

0.35 RD/WH

540

Battery Positive

5

0.35 PK/BK

1020

Ignition 3 Voltage

6

0.35WH

530

Ignition 0 Voltage

Roof Beacon Relay (TRW)
Object Number: 309518 Size: CH

Connector Part Information

  • OEM: 12129715
  • Service: 12129715
  • Description: 6-Way F Metri-Pack 280 Series, Flexlock (GY)

Terminal Part Information

  • Pins: A1, C2
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A2, C1
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Roof Beacon Relay (TRW)

Pin

Wire Color

Circuit No.

Function

A1

0.5 BK

1050

Ground

A2

3 D-GN

5989

Emergency Lamp Relay Contact Control

B1-B2

--

--

Not Used

C1

2 RD/WH

3140

Battery Positive Voltage

C2

0.5 WH

5990

Emergency Lamp Switch Signal

Roof Beacon Switch (5X7/5Y0/TRW)
Object Number: 1715224 Size: CH

Connector Part Information

  • OEM: 15491277
  • Service: 88988747
  • Description: 5-Way F HCM 5PA Series (BK)

Terminal Part Information

  • Pins: 1-4
  • Terminal/Tray: SHCM-A03T-P025/20
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)

Roof Beacon Switch (5X7/5Y0/TRW)

Pin

Wire Color

Circuit No.

Function

1

0.5 BK

1050

Ground

2

0.35 BN/WH

230

Instrument Panel Lamps Dimming Control

3

0.5 RD/WH

240

Battery Positive Voltage

4

0.5 WH

5990

Emergency Lamp Switch Signal

5

--

--

Not Used

Trailer Connector (UY7)
Object Number: 525095 Size: CH

Connector Part Information

  • OEM: 15354653
  • Service: 15306164
  • Description: 7-Way F Metri-Pack 280, Sealed (BK)

Terminal Part Information

  • Pins: A, D, F, G
  • Terminal/Tray: 12110847/4
  • Core/Insulation Crimp: C/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B
  • Terminal/Tray: 15305232/23
  • Core/Insulation Crimp: B/3
  • Release Tool/Test Probe: J-38125-11A/J-35616-42 (RD)
  • Pins: A, D, F, G
  • Terminal/Tray: 12110847/4
  • Core/Insulation Crimp: C/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: C, E
  • Terminal/Tray: 12110845/4
  • Core/Insulation Crimp: F/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Trailer Connector (UY7)

Pin

Wire Color

Circuit No.

Function

A

1 L-GN

1624

Trailer Backup Lamps Supply Voltage

B

5 WH

22

Ground

C

3 D-BU

47

Solid State Relay Feedback

D

0.8 D-GN

1619

Trailer Right Rear Turn/Stop Lamp Supply Voltage

E

3 RD/BK

742

Battery Positive Voltage

F

1 BN

2109

Trailer Park Lamps Supply Voltage

G

0.8 YE

1618

Trailer Left Rear Turn/Stop Lamp Supply Voltage

Wrecker Relay X1 (5X7)
Object Number: 635009 Size: CH

Connector Part Information

  • OEM: 12052641
  • Service: 12102747
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Wrecker Relay X1 (5X7)

Pin

Wire Color

Circuit No.

Function

A

0.5 WH

5990

Emergency Lamp Switch Signal

B

0.5 BK

1050

Ground