Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>" <srward16-at-hotmail-dot-com> Thank you a bunch for the help, can anyone explain why there are 4 connections to the tube, while there are 5 terminals(1 on top, 4 on bottom) on the 811A tube, Also where is a good wiring schematic for an 811A? Steve Ward