C340 Chevrolet Silverado 3500

C340 Body Harness to ESB Control Harness Terminal Identification (HP2) Connector Part Information 173850-1 8-Way F AMP (WHT) Connector Part Information 174931-1 8-Way M AMP (WHT) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function 1 TAN/WHT 2500 High Speed GMLAN Serial Data Bus+ 1 WHT 2500 High Speed GMLAN Serial Data Bus+ 2 TAN 2501 High Speed GMLAN Serial Data Bus- 2 WHT 2501 High Speed GMLAN Serial Data Bus- 3 ORN 2740 Battery Positive Voltage 3 WHT 2740 Battery Positive Voltage 4-6 - - Not Used 4-6 - - Not Used 7 PNK 1939 Ignition 1 Voltage 7 WHT 1939 Ignition 1 Voltage 8 PNK 1020 Ignition 0 Voltage 8 WHT 1020 Ignition 0 Voltage