I just got a 1985 GL1200 Aspy with a no Speed readout. When I was test riding the bike it worked, they told me it needed replacing and now it does. I know the Box Assy for most of the GL1200 will work on my 1985 Aspy. The question I have is what years other than 1985 Sessor Assy will work on a 1985. RIght now the screws are so rusted I can not get the sensor off or even get the sensor open. I hate drilling them out. Any ideas on getting the screws out? and anwer to the first question.