I hope this goes here, if not sorry.
So here's the story I am building an a/b/y switch and it of course has 2 outs and 1 in. The output/input jacks I have, have 3 prong's but in the diagram I'm following the jack have 2 prongs labelled SLV and TIP. Now I wired my a/b/y to what I thought it was and hooked it up to 2 amps just to see if it would work, but the sound goes to one amp and not the other.
If you go to this link its the bottom one I'm building
http://www.beavisaudio.com/projects/ABSwitches/
I have a 3pdt switch and its wired properly the led's both light up and switch back and forth when I hit the switch, switching the channels so its not a power issue. That leads me to believe that my jacks are wired wrong. Is there a way to tell which prongs I should be wiring too? I just can't decipher which prongs are which can anyone help me please?
Sorry I could get a pic up here I'm at work, but it looks like the Jacks I have are grounding jacks.
Grounding input Q PLEASE HELP! 
