I recently purchased a set of 'diamond-cut' H4 retrofit housings for my D90. The housing is relatively flat in the front, and there is a little 'umbrella'-like reflector in front of the H4 bulb (eg you cannot see the bulb from directly ahead). The bulbs are the standard 55/65W H4 with a distinctive blue tint to them (the look very blue when off looking at them, and the light they throw is close to white, but has a subtle blue hue).
Is very poor! These headlights are much dimmer overall than my original sealed-beam halogens. In addition, I had to modify the housings to make them work in the LR light rings, and additionally, I have to crank the adjustments all the way "up" to get them to shine reasonably down the road in front of me (rather than lighting the road 5 feet in front of the D). It was a pain, and it seems all was for nothing.
Before I go about tearing these out, I was wondering about a couple of things.
1) is it possible I just have low-quality bulbs, which are not throwing enough light? Would different 55/65W bulbs perhaps make a difference? I don't want to fry the wiring with the 85/100W bulbs, and I haven't put myself to the time of running new wiring and relays yet.
2) is that reflector thing necessary? I need more light to project FORWARD and that reflector is in the way of at least some of the light (eg directly from the front of the bulb).
I am close to ditching these housings/bulbs, but then I have to admit to myself that I tossed away good money for crap gear