Specification: Working voltage: DC9~32 V Working current: 60m A Working temperature: -30~+75℃ Storage temperature: -40~+85℃ Connection:1. Red -- +9-32V (DC)2. Green -- Speed Signal 3. Orange -- Back Light (+)4.NC5. Grey -- Left Turn Signal (+12V)6. Yellow -- Right Turn Signal (+12V)7. White -- Hig h Beam (+12V)8. Black -- Negative (-) Value K Setting:1) Hold the button for 3 seconds to entry the value K setting mode. Users also could release the button for more than 3 seconds to quit setting, meanwhile, the data had been set will be recorded.2) Since you have entry the setting mode, hold the button, the value will increase from 5.0 to 900.0, if you release the button then hold the button again, the value will decrease. Package Included:1 X Speedometer Gauge 1 X User Manual 1 X Cable