美国采购需求：户外照明

I'm reaching out regarding an issue I've encountered with my main light not communicating properly with the smaller connected light. Currently, the main light only activates one side, while the smaller light functions independently without any problems. This inconsistency is quite frustrating, and I'm looking for potential solutions. Interestingly, I've noticed that when I connect the smaller light to the main one, it occasionally causes the main light to power on permanently, but the side light doesn't turn on at all during this process. I'm eager to understand what might be causing these communication issues between the two lights and if there are any suggested fixes or troubleshooting steps you recommend. Your expertise on this matter would be greatly appreciated.