I've got a 2008 mexican jazz, fitted some sjb3 pickups bridge and neck, wired them in the way the diagram shows but there is a massive hum everywhere, if I touch the input, bridge and tone pot it makes the hum dim slightly but never makes it go away. If I touch either of the volume pots it either squeals or makes the hum a lot louder, the pick ups to seem to be working but haven't had the strings on yet. I've re-soldered it many a time and tried taking earths out and adding new ones and now I'm stumped.
Any ideas??
HELP PLEASE