The only problem that I can see with installing ur 92' OEM HU to a 94' accord is the whole wiring configuration. I can't remember off the back if they're both the same but it's worth a try! Do you know how to remove the HU's for both accords? After you've removed the HU, just simply see if the headunit fits the 94' wiring adapter. If not, you'll have to buy an adapter which is hard to find because they usually don't sell adpater for OEM HU's. Why don't you just install the Pioneer HU to the 94' and put back the OEM to the 92'? haha