Sadly, no wiring diagram was included with my 35w Hi/Lo H4 kit. I did download a PDF of the installation instructions for a Toyota 4runner. Aside form that, it was all pretty self explanatory except for the little wires that control the Hi/Lo function. I had to run the second set of wires to the bulb (the ones I presumed were for the second headlight) in order make use of the little Hi/Lo connector, which won't reach the bulb unless it's right next to the ballast.
Since I'm using a projector lens I removed the metal end cap from the bulb, and the difference in the Hi beam seems pretty negligible. It is definitely brighter than the 50/40w stock bulb though!
I'll finalize it tomorrow and try to post pics of what I did to fit everything (if anybody is interested).