where do i look for short

also, check all your battery connections, both ends especially the ground. weird electrical problems are often caused by a bad ground.

Thanks I have a feeling it is an after market security system

If it is I suggest u take to alarm installers u trust, to many try it themselves not knowing alarms, etc and make a mess of something simple that installers know!

Thanks for the suggestions I've tried everything possible getting down to causes and conditions now I will keep updated