Hi,
I just looked on Yumbo (a parts source in Japan that seems to carry some new old stock Honda stuff) and they also list it as discontinued. I also checked their cross reference for any updated substitute and no joy.
So, I'm afraid that you're probably out of luck finding a new one.
If you still have the old one or could find a used one that has all the connectors in good shape you could easily load test each wire to verify reliability and repair deficiencies on the spot.
Not new but durn near next to it.
Sorry if that's too much Cap'n Obvious for ya but it's all I got.
Good luck.