I have a Cyclamatic GTE, purchased in 2013. Due to faulty storage, the front light broke off. I replaced it with a standard cycle front lamp. Turned on the lights and for a brief moment the light worked. Then everything went out. Then found out it is 24volt system. Surprisingly, the cycle light bulb still works, but nothing on the bike does. Battery shows full charge. The main fuse on the battery is intact. Is there a secondary fuse or circuit breaker elsewhere?