Where do you connect a trickle charger to a 2005 ultra classic?

To connect a trickle charger to a 2005 Harley-Davidson Ultra Classic, locate the battery, which is usually under the seat. Remove the seat to access the battery terminals, then connect the positive (red) lead of the charger to the positive terminal and the negative (black) lead to the negative terminal. Ensure the charger is set to the appropriate voltage and amperage for your battery, and plug it in to start charging. Always refer to the owner's manual for specific instructions and safety precautions.