GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Air Brake System Connector End Views
Connector 1: Air Brake Dryer (JTU)
Connector 2: Low Air Pressure Switch - Primary
Connector 3: Low Air Pressure Switch - Secondary
Connector 4: Park Brake Switch (JE4)

Air Brake Dryer (JTU)
Object Number: 646148 Size: CH

Connector Part Information

  • OEM: 12020599
  • Service: 12102664
  • Description: 2-Way F Metri-Pack 280 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Air Brake Dryer (JTU)

Pin

Wire Color

Circuit No.

Function

A

BN

541

Ignition 3 Voltage

B

BK

350

Ground

Low Air Pressure Switch - Primary
Object Number: 876326 Size: CH

Connector Part Information

  • OEM: 12065402
  • Service: 12125695
  • Description: 2-Way F Metri-Pack 280 Series (BN)

Terminal Part Information

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

Low Air Pressure Switch - Primary

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Available

C

BK

350

Ground

D

D-GN/WH

2662

Low Air Pressure Switch Signal

Low Air Pressure Switch - Secondary
Object Number: 876326 Size: CH

Connector Part Information

  • OEM: 12065402
  • Service: 12125695
  • Description: 2-Way F Metri-Pack 280 Series (BN)

Terminal Part Information

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

Low Air Pressure Switch - Secondary

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Available

C

BK

350

Ground

D

D-GN/WH

2662

Low Air Pressure Switch Signal

Park Brake Switch (JE4)
Object Number: 876326 Size: CH

Connector Part Information

  • OEM: 12065402
  • Service: 12125695
  • Description: 2-Way F Metri-Pack 150 Series Sealed (BN)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Park Brake Switch (JE4)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Available

C

L-BU

1134

Park Brake Switch Signal

D

BK

750

Ground