E L E C T R I C B I C Y C L E M A N U A L - B I G B O Y
Page 17
Common Circuit Problems Checking
7. head light or tail light cannot work
Condition 1: the lights with dry battery
Check whether the dry batteries of taillight or head light have ran out, if yes, please change new ones ;
Condition 2: the lights are connected wire
A). Please check whether the positive and negative poles of the light are connected by opposite or inserted slanting;
B). Change a new light to check if can work or not;
C). If there is a light module, please check if the light module wiring sequence is not;
D). If there is a head light patch cord, please check the head light connection wiring sequence is correct or not;
E). If All above parts are all no problem, please change the controller.
