Ya, I'd like to see how you did it as well. This turn signal issue has me in a quandry. I really am stumped as to how to handle it, but yours look great. Do you just ditch the stems and bolt the signal body directly to the struts?
All the bolts that hold the rear fender on had to be removed (at least this is how I had to do it) The nuts on the back of the signals can be removed with a 1/2" wrench. You'll need to unplug the signal wires from underneath the seat, I ended up cutting them and reconnecting. Once you get the strut covers removed, the signals come off with them. To remove the stem, I used a 5/8 deep socket. I cut the wires so I could pull them trough the stem. In place of the stem, I used a 1/2" bushing (painted black) and a short 5/16 bolt (I don't recall the exact length). I connected the signals to the strut covers only, not actually to the strut. Put some heat shrink on the wires next to the signal, ran the wire between the strut cover and the strut and back up under the seat where I reconnected. Hope this helps some. I'm sure there's probably some different, maybe, easier ways to do it. I'll try to get some better pics when it is daylight.