I know this will fit a lot of others. It's a Draw-Tite 18336 Wiring kit for a trailer. I put a hitch on my 2001 EX-V6, and got the wiring kit, but never used it. Still sealed in the package. I only used the hitch for a Bicycle Carrier. I have a motorcycle trailer, but never pulled it with the car.
This sells for about $25 + shipping, and I'll sell it shipped for $15 (US only)
email me at gforeman (at) crosslink.net