Though the degree of cooperation differs between alliances, airlines alliance is more helpful for small airlines. There are three major international airline alliances namely SkyTeam, Star Alliance and Oneworld. One of the modern alliances is that formed by cargo airlines.
The top terminal should be connected to wire #18 (low beam), the bottom right to wire #17 (high beam), and the bottom left to wire #91 (headlight to ground). I purchased my lights from a local shop, but I found that Susquehanna Motorsports has a web page with competitive prices and a nice write up about the lights.
This Kit cuts both beams of the H4 Socket with the shorter leads. If you want to cut the right headlight, bring in the Kitâs main wiring from the right side. To cut the left headlight, bring in the main wiring from the left side. You can buy a DPST switch for this Kit here (Toggle) or here (Rocker).