I have a good used clutch safety switch that fits only the above models as far as I can find in the books. I tested it with a continuity tester and it works perfectly on there. 

Someone has cut off the wires right about where the connector should be. I have correct used plastic connector bodies if you want to put a connector back on it.  They are shown in the first picture. 

I checked on ebay and found two sales for used switches the same as this, $45 US and $52 US plus shipping. Repro switches are about $65 US and up (and you know the quality of repro switches......) I would like to get $40 Canadian plus shipping for it. 

Feel free to ask me any questions about it, or ask for more pictures of different angles if you would like.