So, having decided the lack of interest in my Morley Wah Volume is a sign that I should keep it, I added it back into the pedal chain today. Wait a minute, no noise. Click. Volume pedal works. Click. Nothing through the wah. Check light. It’s on. The only time it gave me a problem before was when the bulb burned out. Not the issue this time. Click. Yep, volume works. Click. Dead silent on wah. Hmmm... Well, when in doubt, open it up and stare at the internals as if you know what you’re doing. I start undoing the screws on the side, and I’m looking at the sticker that says “instrument” and I think “hey... did I...?” Plug it back in with the cables in the correct jacks, and whattaya know? It works fine. So how does the volume control work when the amp/instrument cables are reversed???