Just fiddled around with a spare flamer... Don't have any pics, but this isn't too complex.
Trim off the handle at the top (the only piece that juts up).
Trim off the igniter and the fuel tank.
Drill a small hole above the grip (the ridged area forward of where the tank normally is) and somewhere on the tip of the flamer (the part that's perforated). Manipulate a paperclip or other wire in those two holes.
I'll put a paint pic up soon.
Hope the text alone helps.. More to come..