Where is the coolant drain for 1999 Honda GoldWing gl 1500 Aspencade?

The 1999 Honda Gold Wing GL1500 Aspencade doesn't have a traditional coolant drain petcock like a car. The coolant is drained by removing the lower radiator hose. This is generally the easiest and most effective method. You'll want a drain pan to catch the coolant. Be sure the engine is cool before attempting this to avoid burns.