Where is the oil drain plug on a 2005 Harley lowrider?

To find the the oil drain plug on a 2005 Harley lowrider, look under left side bottom of Primary and find a rubber hose that is clamped to a metal plug or lug, loosen the clamp and let the oil drain, ensure you remove the oil tank filler cap, your oil is drained out of the tank. remove the oil filter. Replace the hose on to the metal lug and tighten clamp. Put 4 ounces of oil in new filter and hand tighten filter, pour the other 3 quarts of oil minus the 4 ounces in the Oil Tank, turn engine over a couple of times before starting. Start engine and make sure oil warning light goes off. Total engine oil is 96 ounces or 3 quarts. (The plug under the primary case is to drain primary oil only.)