One was for fog lamps, one was the main power relay, and one was for the blower. Truck had a little moisture in it for a period of time.

Danny, they would tick but too much corrosion was on the contacts. They are a simple relay. Single pole on the yellow and double pole on the green..

 

Depending on construction and condition, some relays can be restored. Especially contact mating surfaces. It is known as burnishing the contacts which just means cleaning them back to a shiny condition with either a fingernale type file, jeweler's file or even metal oxide type sand paper or steel wool, sharp knife if you are stranded on the trail.

However, if they are reasonable priced, it's probably best to replace. I have never really looked at them yet.