Would like to know how to navigate up and down preset channels. The center button on the steering wheel trigger moves to next pre-set channel, but how can you navigate back to previous pre-set channel? Up and down trigger buttons just navigate to next channel, not next preset. Does anyone know how to navigate both up and down preset channels?
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
  
  
  
  
  
  
  
  
  
 