Was watching South Main Auto video where Eric used a 4 channel oscilloscope to diagnose a Ford with smart charge system. He spent time to understand how the system works and to diagnose with both a scope and scan tool. So my question is does the average Indy shop have a scope and do they take to time to diagnose problems with a scope. Eric seemed to have an expensive Pico scope adapter that turns a laptop into a scope. Not a $100 cheapie. But one needs the scope and knowledge to use it. It's a lot more knowledge required to use a scope than take a DVM and measure battery voltage.