DL1221

From another post:
If you do need to add the second Campaign pump in the frame as a pusher, don’t forget that these pumps come with 12mm ports for use with the stock banjo bolts, so you will need some special adaptors to fit the 3/8 fuel line. Vulcan Performance has them for $10. Oh, you will also need a braket to bolt the pusher pump to the frame, Vulcan also has one. And you know about the relay and harness, as the other post explains.