This keyless remote programming instructions work for disc. 88-91 prelude remote with part # 72147-SV5-A02, FCC id KOBUTA1T on the back of it.
1. Open the driver’s door.
2. Press and hold UNLOCK on the power door lock switch. Hold it until step 6.
3. Within 10 seconds, put the key in the ignition and remove it 5 times, then insert the key and leave it in the ignition. The door locks will cycle which means you've entered programming mode.
4. Press LOCK or UNLOCK button on the remote. Door locks will cycle (except the driver’s) which means the remote has been programmed.
5. Repeat step 4 to program another remote.
6. To exit programming mode, release the power door lock button.