Xt600e 2003 wont start

Hi all. i have a 2003 4pt xt600e didn't do many miles on it last year as it was a bit unreliable( starting probs and cutting out whilst riding) Decided I was putting it back on the road this year, found a loose connection on the electrical unit under tail plastic(secured this and bike ran ok for a short time) checked the rest of loom and found a bare wire on sub loom from positive battery terminal to starter relay(which has fuse and spare fuse slots) replaced this lenght of wire with new sub loom from yamaha,£7.13. bike turned over great after this so assumed it was sorted.

fitted heated grips that mrs got me for xmas whilst loom was exposed and put all panels back on, bike turned over but did not fire up assumed this was due to old petrol and topped up with fresh stuff and tried again today bike turned over once or twice then nothing. neutral light not coming on nothing happening when when i press starter button, power getting to light horn indicators etc which are all working great. triped disconnecting heated grips but still nothing. any ideas ???????????? new spark plug fitted before i started.

bike had heated grips before which i removed and new grips are connected straight to battery. tried disconecting them but still nothing.

thanks in advance