Connecting wires and wiring color codes Green wire is the signal wire Red wire is the positive 5V supply Black wire is the negative (ground) Blue wire connects to the controller switch Yellow wire connects to the power supply Voltage range and automatic identification Automatically identifies for electric bike systems in a universal 12V to 99V range Real time display Digital voltage display shows remaining power and mileage in real time Battery compatibility Suitable for lithium, wet (water) and dry batteries Key benefits Colorcoded wiring enables straightforward and reliable installation Universal 12V99V compatibility supports a wide range of ebike configurations Realtime readout of remaining power and mileage helps planning and reduces unexpected power loss Supports multiple battery chemistries (lithium, wet, and dry) Use scenarios Scenario 1: Retrofitting an older ebike with a battery pack; use the colorcoded connections and automatic voltage identification to ensure compatibility and quick setup Scenario 2: Daily commuting or fleet use where riders rely on realtime remaining power and range data to plan charging and stops Scenario 3: Use on other devices within the 1299V range, such as scooters or powerassisted equipment, with lithium, wet, or dry batteries, for continuous voltage monitoring and operation support