These lights are the second to highest in their product line. Chose them because they are preassembled into an H4 lens and do not use a fan.
This started as a 1 hour project that as usual turned into a 4 hour thing. After fighting nearly 50 year old screws the biggest issue became where to mount the circuit board box that is part of the assembly. First impression is it should be easy, but there is really not that much room in the headlight bucket as the assembly rotates up and down and the placement is not inconsequential.
Not inconsequential because one placement caught my plastic trim bucket and caused a stress crack. Bummer as these are original white ones on my '70 car.
At any rate, I ended up wrap tying onto the bracket that holds the spring. This position is a good fit. and remains out of the way as the assembly moves through its motion. Pix below.
Maybe this will save someone else some time (and a cracked plastic trim bucket).
Warning: Many wrap ties died in the completion of this project.
Oh yea, great product, low beams project a very diffuse pattern that lights a big area in front of the car. High beams are very effective. Makes night driving a whole new and safer experience. NICE!!