Thanks. I've purchased the Resler IBUS USB Module (orange) and Android app, but now need to wire it in.
There are 4 cables coming from the Resler USB. 1 isn't used (green), and the others are +12V, earth and iBus. I'm pretty certain I've found the earth (brown) and iBus (grey/white with yellow dots) on the blue X18801 connector below, but not the +12V. Any ideas which one I can get a live feed off?