I am having typical main relay problems with my 92 accord. I have tried 2 different new replacement relays. When i put them on the car does not start at all. When i put the original back on it works fine, but it still gives me trouble in heat etc. any ideas?

 

Either you magically are getting a bad main relay out of the box which I can't imagine has ever happened before, or you're buying the wrong main relay or you're plugging it in wrong. Can't really see it being anything else but I suppose it's possible.

Without any other information from you there's not much advice I think anyone can offer you.