I put together a nice cheatsheet to help identify the right type of AL projector when you are looking at listings or out at a salvage yard.
Download the full PDF: AL Projector Identification Guide
You want to look for “Gen 2” projectors, they have the best optics and the wiring is simple. Gen 1 requires a solenoid controller for bi-xenon functionality.
Remember that aftermarket ballasts only run D2S bulbs. To use D1/D3/D4 bulbs you need an OEM ballast. D2S bulbs will fit in any of these projectors. The ones with octagon-shaped bulb holders might need a simple modification to allow them to take D2S bulbs. All of them with black plastic rings are designed specifically for D2S.
Low Beam Patterns
High Beam Patterns
Notes
Links to Full Images (click to show)
