Kuruma Hayai & GeorgeB:
Thank you for your input.
I tried to locate Hidden Hitch you mentioned. I guess that it is Trailer Hitch which I found in honda-accessories site for 1999-2001 Ody model. However, it is not available for 2002 model. They only have towing package. In the honda-accessory site for 2002 model, it says:
-2" receiver style design, 3,500 lb capacity. Includes wiring harness, drawbar, and rubber cover with "H" logo.
Includes Transmission Cooler and heavy duty Power Steering Cooler, which Honda requires for all trailer hitch installations on the 2002 Model.
What I don't understand is why 2002 Model requires these additions. Any idea?