Take the seat lock off the bike (comes off with two or three bolts) and down to a good locksmith, see if there are any M/C specialists in your area (San Franciscans are lucky to have Key Craft on Church St. The owner is a motorcyclist, and has done excellent work for me in the past). If the ign. key fits in the seat lock (Doesn't neet to work, just fit), the lock cylinder can be altered to work with the ign key. If it doesn't fit (you must acquit--sorry, couldn't help myself), the locksmith may have some key blanks to make a new seat lock key. Key Craft has blanks, and some dealers may as well.
For that matter, a dealer may be able to get you a key for the seat lock, from those numbers you mentioned. Try MR Honda in North Carolina (mention SOHC4 Club for a discount). Cheers, Carlos
