I finally got around to upgrading the headlights on the 1990 suburban. I had previously added relays when I was using sealed beams, and that definitely made an improvement in down range light.
LMC finally had their upgrade lights in stock that take 9006xs (low beam) and 9005xs (high beam) bulbs. They definitely threw more light than the sealer beams, but I was still not entirely impressed. especially with the low beams.
so I did some research on here and found that others had used 9012 bulbs (same 55w, but 87% more lumens) in place of the 9006xs bulb. I had to trim the headlight bucket at the bottom to make room for the bulb socket because it is a 90deg base vs the straight base of the 9006xs bulb. I used a dremel to cut vertical cuts and then just bent the tab back and forth until it broke off to clear the bulb base.
I will say that the 9012 bulbs REALLY woke up the headlights. I am finally happy with the downrange light. there is a good cutoff and plenty of light. I run some wide angle LED fog lights that are pretty bright. The fogs dont overpower the 9012 bulbs and it is pretty impressive.
Anybody looking to make the upgrade won't be dissapointed for a total investment of about $250.
I did try to smash a 9005 bulb in to the high beam, but just trimming the bucket wasn't enough. I was going to have to also cut into the core support and didn't feel like doing that as the 9005xs bulbs are plenty adequate.
just thought I would throw this info out there for others looking for more light.
