I just called Ray Laks Acura this morning and they said they can get the keyless kits for 1993 and later only. I also called Delray Acura and came up dry.
In another thread on the FORUM, I learned that there are inexpensive keyless kits (about $30) on eBay that you can splice into your system to actuate the doors and trunk locks. The problem is that when doing so, the person (who seemed pretty resourceful) who posted the information in the thread could not figure out how to use it to also arm and disarm the alarm system. It seems to me that someone who is familiar enough with the early NSX wiring diagram should be able to come up with a way to wire in these kits so they can both actuate the locks and arm the alarm. Afterall, there are guys who devise products like the SmartTenna. This problem doesn't seem like it should be much more complicated than that. To me, it seems like all the heavy lifting has been done. Is anyone familiar enough with the wiring of the alarm system to get it to also work using one of these inexpensive keyless kits?