After much searching that seems the best kind of route.  I have an Alpine in the other Defender with an iPod jack and at present we are still using the Monster cable FM transmitter unit in the Puma.  I need to sort out in car computer etc for next year anyway so its all part of the same thing.  
Since found out the kit I referred to in my initial post is an in line with antenna unit and so even if it was available in Australia isn't what I want anyway.
				
			 
			
		 
			
				
			
			
				MY15 Discovery 4 SE SDV6
Past: 97 D1 Tdi, 03 D2a Td5, 08 Kimberley Kamper, 08 Defender 110 TDCi, 99 Defender 110 300Tdi[/SIZE]
			
			
		 
	
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