Hi all. On Saturday my van started playing up. I could and can hear it click from the one relay in the black plastic box to the left and right at the back of the van. I played with some wiring ( scotchlocks

) and got it running. Died again and got it running again twice. Now it wont start at all. But the relay still clicks. What is the relay? or could it be the other voltage regulator??? to the side of it?
Gary