Both my Cateye Astrale and Mity 2's have wires with 2 separate
cores. I have spliced them several times to either extend them or fix
breakages.

Simon
--
Flux V220 CLWB | Zox20 Lowracer
Hase Kettwiesel trike | ex-Pashley PDQ SWB
Simon Kellett, Darmstadt, Germany | http://home.arcor.de/zoxed