There were four units behind the battery. Two were rather large so I don't believe they were fuel pump relays. The third one was a MAS unit, the fourth one was a small relay with a 10 amp fuse on top and corresponding numbers that you were talking about. Problem is there is a number 30, a number 30 A, and also a 87 E, and 87L. Which two should I run the wire between? Thanks for any help you can give.