Delphi makes a bunch, not sure which specific variant they have on those. There are tons of connectors on the Rocket (under the tank etc) that may well be Delphi branded too - but either way you need a Delphi connector added on the bike or else you do away with connectors and just wire the cables together directly. Not at all difficult, that's how I wired up my new fog lights. Just slashed the connector off the lamp, slashed the cables in the lamp housing and connected them up with Posilocks. Very easy and a very secure fit, worked perfectly.
Gives a "semi-permanent" connection, which is fine since LED's should last the lifetime of the bike, basically, tens of thousands of hours.