Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <stanmoore-at-mindspring-dot-com> Here is a method that I have found for connecting the tap wire to the primary. I use a 1/4" fuse holder. I just cut it in half and use one end of the clip to connect to the primary. I soldered the wire to the clip lug. Works great on 1/4" tubing, much better than an alligator clip. Stan