31-10-2013, 11:00 PM
Sounds like interference on battery draw/alternator use, that top link may solve it. Ages ago my mum had the similar issue in a car, just a HU swap and a suppressor stopped it
![[Image: siggy1.jpg]](http://i653.photobucket.com/albums/uu252/crissy_boy/Cars/siggy1.jpg)
the smokey old bus that sounds like a tractor...