Right, All sorted, found that the connection from the control module on the Grips and the feed from the front break light switch was not sound, bit of solder later and all OK. What I have noticed is that if you sit at a set of light for more that 5 mins the blue light comes on. I think that this could be the Oxford controller monitoring the voltage and switching off. This is not an issue as I usually gently cruise up to lights, and try ad time it so I don't stop. Thanks everyone for your advice, this forum is great.