Pin 1 : SW+ (power switch)
Pin 2 : NC (Not connected)
Pin 3 : W+ (Rear light White +)
Pin 4 : R+ (Rear light Red +)
Pin 5 : NC (Not connected)
Pin 6 : BMS RX (BMS communication receive)
Pin 7 : Batt - (Battery -)
Pin 8 : Batt + (Battery +)
Pin 9 : CHGR + (Charge detection)
Pin 10 : NC (Not connected)
Pin 11 : W- (Rear light White -)
Pin 12 : R- (Rear light Red -)
Pin 13 : NC (Not connected)
Pin 14 : BMS TX (BMS communication transmit)
Pin 15 : Batt - (Battery -)
Pin 16 : Batt + (Battery +)
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Another pic for good measure :) This is from my Plus.
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