1994 honda accord ecm compatibility
 

I recently purchased a 1994 honda accord ex, it's a beautiful machine after fixing several electrical problems caused by the previous owner, but i have no AC, and the water temperature gauge doesnt work (the fans do come on while running and when i shut the engine off, i've driven it over an hour without over heating). according to all the troubleshooting im capable of doing in a shop manual ive acquired, the problem is apparently the ECU/ECM i've been looking for one in the local scrapyards and this appears to be the first part gone on any that they get in.

So the question is: What models of honda would i find the same ECM in?