Thanks fellas,any ideas on why the one on the standalone PIR has started flashing and the other on all the time.As said they were ok at first,the standalone has been working fine on its own for over a week,
right have run the cable to a second light with PIR round the back.After working ok for a day the one from the standalone PIR is flashing all the time and the one with the built in PIR is on constantly.The 10watt wired to the standalone PIR was fine up until I added the second light.