thanks gents thats a big help. no it doesnt have any lights, but by the state of the minimalst wiring it may have had at one time? there is a a cheap looking handlebar mounted light switch thing that has been removed with a pair of pliers in the small box ot bits that came with it. this has a red and a blue push button on it, and a slot/hole that another switch lived (a long time ago). there are 9 wires going in to it, but tye rest of the loom that runs to the handlebars is long gone. now i know its only the black wire i need to worry about, the rest can be chopped and sealed off.
Im in the NE of Scotland, so its a long drive to a bearing supplier - internet is best. i have cotacted In Motion trials for the chain tube and alloy bracket, although not really sure why its there, my Whitehawk TY manages without.