Fixed neoprene tape all the way round head lamp, Re fitted and lamp now feels tight in bright work casing and you can’t see tape. Just took for test run and whistling gone totally. Thanks very much for fix. Cheers, Jon.
It's not a fault. It was fitted like that so as to make an ultrasonic whisle to deter kangaroos. They do have a nasty habit of suddenly jumping out in front of cars. You'll now have to be really careful around kangaroo feeding time, dusk and dawn are the worst times!!!!