Installing GFS pickups | A Guitar Forum Nov 04, 2009I bought a set of GFS Power Rails to put in my Agile AL 2000. It has coil tap capabilities so it has the two extra wires. I wasn't sure which wire went where so I checked out a seymour duncan wiring diagram, and i soldered the wires as I saw on it, but when I plug it in I don't get any sound. Wiring GFS humbuckers | My Les Paul Forum Dec 31, 2012Just to further add to my confusion, the GFS instructions indicate that green is positive while black is ground, however it goes on to say "GFS humbuckers may also be wired using Seymour Duncan wiring codes" however according to this diagram, SD's wire colours are the reverse of GFS: How to Install Emg Pickups | Our Pastimes How to Install Emg Pickups By Kevin Krause ; Updated September 15, 2017. Note how the wiring is configured, finding the wire for the pickup output and ground. Drawing a simple diagram can be helpful. Unsolder the old pickup connections from the ground and volume pot. Note on your diagram where you disconnected these connections.