Good afternoon, I have a 1983 Toyota 4X4 short bed pickup. Today when I went out to start it there was a clicking noise heard from inside the cab. Well I did some investigation and found a relay located inside the engine compartment on the right side fender to be the culprit. It's labeled emission relay on the outside of it and has two snap togeter connectors coming out of the bottom, what is this relay for? I disconnected it and tried to start the truck and it started right up. I dont want to drive down the road and find out later it was very important. My books don't say anything on this relay, please help.