I ride an 2003 ultra and took time to clean battery terminals and all ground connection plus the positive connects to the battery. made a big difference in cranking and idling for mine.
can someone tell me what the small terminal is in the battery compartment that is about 3/4 x1 1/4 inches and one terminal has 1 wire and the other has two wires on it is. these conections were beginning to turn green so i removed and cleaned also.