I have had a mysterious battery drain that has been driving me crazy. I have pulled every fuse under the hood and interior. I have disconnected the alt. to make sure it wasn't bad diodes. When I disconnect the plug that is circled in the picture, and plug it back in I can hear a relay click. It sounds like it is coming from the EFI but I can't tell for sure since I am doing this by myself. When it is just sitting, it pulls 150mA.
