Anyone with a TRD 7th injector?

I have a seventh injector kit minus the three-wire harness that goes from the TRD ECU to the injector itself. The harness comes with two plugs but only one is used, the manual says to tie up the other out of the way. I am assuming that one wire is the 12v that supplies both plugs (pink wire) and the other two wires are the switching grounds that go to each individual plug so I have two, two-wire plugs. Their colors are black w/white stripe and black w/brown stripe. My question for someone with a 7th inj. kind enough to go pop their hood: Which wire goes to the 7th inj. plug. I could figure it out through trial and error but I'd rather not. Thanks in advance.