In the early days of my electronic exploits, I could always count on Radio Shack to provide an answer. They had a coupler for everything. And a battery for anything you brought in. There were cables dangling and flashlights of every shape and color. Radio Shacks thrived before there were cell phones. If you needed a gadget they could help you with it. During a power outage my young son and I were stranded, during a storm, downtown in a Radio Shack store.