signal Reference volt- age signal VREF Symbols 4-3 BN Brown DB Dark blue DG Dark green GN Green LB Light blue LG Light green NA Natural OG Orange YE Yellow Wire colors Black BU Blue GY Gray PK Pink RD Red SR Silver TN Tan VT Violet WH White BK Wire colors BK Black BN Brown BU Blue DB Dark blue DG Dark green GN Green GY Gray LB Light blue LG Light green NA Natural OG Orange PK Pink RD Red SR Silver TN Tan VT Violet WH White YE Yellow Wire colors BK Black BN Brown BU Blue DB Dark blue DG Dark green GN Green GY Gray LB Light blue LG Light green NA Natural OG Orange PK Pink RD Red SR Silver TN Tan VT Violet WH White YE Yellow VREF PWR VBATT VPWR SCP + SCP − ISO Reference volt- Switched power Battery voltage Switched or Standard Cor- Standard Corpo- Data bus ISO age module voltage porate Proto- rate Protocol 9141 (K−line) col (SCP) (SCP) data − data + − SIG RTN + − signal signal signal Signal return Signal return Switched Ground ground VREF PWR VBATT VPWR SCP + SCP − ISO Reference volt- Switched power Battery voltage Switched or Standard Cor- Standard Corpo- Data bus ISO age module voltage porate Proto- rate Protocol 9141 (K−line) col (SCP) (SCP) data − data + − SIG RTN + − signal signal signal Signal return Signal return Switched Ground ground Wire colors BK BN BU DB DG GN GY LB LG NA OG PK RD SR TN VT WH YE Black Brown Blue Dark blue Dark green Green Gray Light blue Light green Natural Orange Pink Red Silver Tan Violet White Yellow Joint connector Joint connector 1 C120 359 GY/RD jumper 3 C200 4 C200 359 GY/RD 2 C120 1 C120 359 GY/RD jumper 3 C200 4 C200 359 GY/RD 2 C120