[Merc Cruzer]

Take the cover off of the relay, by bending the tabs back, really carefully. If you break a few, the cover will still stay on. I usually spray a little WD-40 Contact Cleaner on the points, and it seams to do the trick. Considering the option (the cost of a new relay - ouch ouch ouch!). The old parts are really quite hardy, and in most cases with a little cleaning they can be put back into service.