I love my Oberon bar-end turnsignals, but every so often, the expanding flange on the inside of the bar works loose, and since the bolt which expands it has the wires running down the center, the wires must be fed back through the bars and signal body, the expanding flange repositioned, tightened, and last the wires fed back through the bars and fished through the small hole and out the bars. It's a pain in the ass!!
So I took an M6 Allen key and cut away enough of one of the hexagonal faces to allow the wires to stay in place whilst the bolt is tightened: no more fishing the wires through the bars!
Shitty cell phone pics:
Oberon should include such an Allen key with the signals and send me 50 cents each time they sell a set.