36V 48V 60V LCD Digital Electric Bicycle E-Bike Speedometer Battery Indicator77 Fitment:Universal Fit For 36/48/60V Electric Bicycle Its main function/it indicates: frontlight, left and right turning,(please inform in advance if you need,) speed(defaut setting taking phase wire voltage signal, this model cannot take hall sensor wire signal,) 3 gears (, default setting it will not lighten. and the error code is not lightened,unless your controller read yxt signal,.) odometer POsitive and negative automatic identify. warrenty one year/ battery level (indicate battery voltage , will not change ) The wiring way WIRING for a big white connector RED-power POSITIVE black-power negative blue-frontlight purple-speed , phase wire voltage speed testing. orange -left turning signal light blue-right turning signal see this location and sequence. if yours are different can try to change by using a thin iron stick. wiring Speed for this kind of display it has 4 ways to take signal --this depends on your controller program 1),. phase wire voltage speed -usually connect with one single speedometer wire of controller, need your controller is square wave model,. 2). one for all wire, yxt --also for hallsensor, need your controller read yxt signal for speed, 3). hallsensor speed--connect with motor or controller hallsensor directly to read speed 4)., communication type. like CAN, When choose a display please check first which type your controller is . if u canot make clear, and order, please donot blame us, if u dispute , we will refuse to do business with you forever. how to connect the speed wire ways 1). connect purple speed wire of display with speed(display/instrument/speedometer) wire of your controller -- if your controller has one single speedometer wire which takes phase voltage signal 2). if your old bike has no speed wire, HAS NO DISPLAY AT ALL, can pull one from display and connect with controller. CHECK which one will work, phase wire or hallsensor wire connect with controller phase wire 3), if original vehicle has display match with it and they have communication protocol, u canot use this display . such as if votol or sabvton controller or kelly which has original display ,and they have CAN or BUS communication. (kelly or sabvton or votol or Yuyangking single controller which has no display before, u need check whether they have speed wire or not,if they can read yxt signal for speed, then u can order) or like this below . canot change to this PBEVIBIKE display . IMG_20200820_155526