Basically....
9011 is a brighter 9005
9012 is a brighter 9006
All 4 bulbs are single filament.

9011 & 9005 are usually used in high beam housings.
9012 & 9006 are usually used in low beam housings.

There is a slight difference in the base of a 9005 & 9006 vs 9011 & 9012. Many housings will fit either easily (9011 in place of 9005, or 9012 in place of 9006) while some may need trimming of a tab on the bulb. I installed 9011 bulb in place of a 9005 (both Halogen) on my mother's 2015 CR-V without any modification

When buying LED replacement bulbs, buy the same model as the original halogen bulb. Also stick with a design where the LED are shaped/positioned in a thin line in the same orientation as the filament in the original Halogen bulb. When installing them, make sure the LED face left/right in the housing and not up/down. Most new common LED bulbs are rotatable in some manner (either they click/rotate or use a set screw or both).

Some LED bulb makers make their bulbs fit multiple similar housings so they might make the 9005 and 9006 both fit by having a slightly non-spec shaped base so it will fit both. Either way, when buying, make sure it is listed as fitting the housing you are going to put them in and don't just guess/assume.

 

VIP1, you are most wise. Thank You! I did search the web for an answer first, but believe it or not, I could not find one, at least not like yours.

One last thing. Could someone please share photos of how you attached the power supply? I'm concerned about it interfering with the opening mechanism of the headlights. They don't show you that little box in any photos when you buy them.

 

I help where I can.
My car is in the shop getting some work done, so I can't get pics right now, but I think I zip tied it to the existing bundle of wires. However you mount it, test by manually raising/lowering the headlights and not via the electric switch. The manual **** is under a rubber cap in a hole in the top of the mount behind the headlights.

 

Well, guys, nothing is ever easy. I bought the Fahren bulbs with the small fans https://smile.amazon.com/dp/B082KRN5...roduct_details

The problem is that the tabs don't line up with housings. I think that it's because I bought the 9012 from the link in post #8, but maybe I should have gotten these these 9006's https://smile.amazon.com/Fahren-9006...e%2C102&sr=1-4
I'm going to exchange them. The 9006's look correct.
Learn from my mistake.

 

There is a slight difference in the base of a 9005 & 9006 vs 9011 & 9012 (I forgot to mention that), but many housings will technically fit either one (I thought the LMC Truck Headlights fit into that category). Some housings may need to have a tab on the bulb trimmed. I installed 9011 bulb in place of a 9005 (both Halogen) on my mother's 2015 CR-V without any modification. I'll adjust my post above. Many LED manufactures will make the base non-spec to fit more applications so they don't have to make as many different bases and can market them as fitting more housings. I guess Fahren followed the spec more strictly.

How does that collar come off the bulb? You might be able to tilt that into the locking ring in the housing and twist into place, then re-insert the bulb body. This may work, unless it uses a set screw that is positioned on the side the ring that would end up inside the housing. Sometimes there is enough space to tilt in the assembled bulb without having to remove the ring.

I found a pic of the bulb showing the set screw and unfortunately it would end up inaccessible once installed. That is unfortunate. Can you double-check yours?

 

Any update? Did you try fitting the ones you have or did you exchange them for others?

 

Okay, today’s report:
I exchanged the old lamps for new. Easy swap. They do fit, and lock in, though not as tight as the halogens. The tabs are slightly smaller on these. LMC truck housings, by the way.

The challenge this time was getting the end through the hole in the bucket.
The LED passes through okay by itself because you can maneuver it. The wire from the LED is on the side (obviously because of the little fan on the end) and this prevents it from going straight through when mounted in the housing. We’re talking a couple millimeters
All I did was take a slip joint plier and open it up inside the bucket, forcing the tabs apart.
When putting the housing back in, you have to be careful not to pinch the wire as the end of the lamp goes through the hole in the bucket.
I suppose one could grind/cut the hole wider, but I really didn’t want to go that route.
I did not secure the power supplies. They are very close to the end of the LED, so not much wire to play with and you really can't see what you're doing. I think they might be okay. We’ll see.

Here are photos:
One down my street with halogens; one with LEDs.
Pulling up to the garage door at two distances.
The closed headlight showing the fan end of the bulb.

I don’t think the LED necessarily lights up the road much better, but I do prefer the white light.
They do look uneven, especially down the road, but I think this is the car and not the headlight adjustment. I believe one of the lights is adjusted as far as it will go.

I want to do the fogs and high beams next.
Question: When aiming my high beams, should they be in the exact target positions as the low beams? Can’t find an answer to this. (I think because most cars have single headlights with dual beams and we have 4 physical lights)

 

Doesn't seem as even as I was hoping either. It might be the size/shape of the LED contributing. I commented earlier that they looked a bit large. Unless they are aimed too low? Can you take more pics aimed at a wall at about 25 feet? The set screw might allow you to slightly adjust the depth of the bulb in the housing too. That may also help. Don't go too far and wash out the beam though.

As for high beam aim, they pretty much should be at the top edge of the low beam.

 

I had done my best to aim the lights when I first got the LMCs and new lamps (watched a lot of tutorials and took notes). They've been aimed like this for a while. I don't remember which is which, but I got one on target, and the other is as far as it goes; comes close but does not match. Do you think they're too high? I'll try to find a spot to take pics one night after work.

 

You'll have to go someplace level and aim at a wall 25 feet away to check aim. I can't tell if they are aimed right from those pics. at 25 feet, they should be aimed straight ahead with a 2 in drop from center measurement of headlight.

 

Everything takes me forever. It's going to go. I will be modifying all the glass lenses to LED'$ for almost just the cost of the LED'$. And without bucket trimming. And without wire splicing. I finally got her in the operating room and have allot to do.

 

I want to do high intensity lighting on my car as well and I found a fee moderately priced bolt in kits In a few places just replace your sealed beams with these. No cutting trimming fussing required just swap the bulbs and call it a day from what the descriptions say (if that is true and accurate remains to be seen or not)
few shots and kits of lights shown below:


HID LED Light Kit

HID LED Light Kit #2


few links I found as well

Hopefully this provides all with some other options vs hacking up the front of their cars and Makin a mess

https://latemodellighting.com/products/pontiac-firebird-trans-am-led-headlights-brightest-available-complete-kit


https://auxbeam.com/products/4x6-inch-anti-glare-led-headlights-with-hi-lo-beam-drl-for-pontiac-trans-am-98-02-gp00007975

https://www.ebay.com/itm/393648454177?chn=ps&_trkparms=ispr%3D1&amdata=enc% 3A1Wdd0rC7mQcyg1O61wh-iFQ23&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&mkscid=101&itemid=393648454177&targetid= 1644837436203&device=m&mktype=&googleloc=9007196&p oi=&campaignid=16743749222&mkgroupid=138744546207& rlsatarget=pla-1644837436203&abcId=9300842&merchantid=6296724&gcl id=Cj0KCQiAz9ieBhCIARIsACB0oGJPzda8TBi5vKBpczFx7b5 jzHmVO5XHXB8Cjqfpy_j4ikRpMvIXTPYaAvnEEALw_wcB

https://ledlightstreet.com/products/h6054-led-conversion-kit


https://latemodellighting.com/products/pontiac-firebird-trans-am-led-headlights-brightest-available-complete-kit


Note...I don't have any affiliation with any of these companies or what not...just trying to provide some options for folks because we all know our 90s sealed beam lights are 1950s technology and honestly suck *** putting it mildly. Especially on wet drizzly night driving its like even with my high beams on it seems like i have a cigarette lighter brightness or 1 candle power and cant see worth a damn if its dry outside then the headlights work mehhhh so so at best .... i want like the new blinding 2023 type headlights where the headlights are as beight as landing lights on a Boeing 747 that you can see 50 to 100 miles away and not 50 to 75 inches away like the sealed beams seem to be.... to me anyway.

Hope this helps... when I finish my engine and interior projects I'll be buying one of these kits and seeing if they work well and are decent. I'll try to keep it to $200.00
any higher than that I would probably opt for a complete modification of the inside of the headlight door pockets and graft some ultra modern set of HIDs from something else into the car but hopefully one of these setups will work well...
good luck to all with your headlight projects

Jay.

 

Those multi-element "reflector cone" 4x6 LED Headlights usually have a bad beam pattern and are technically too large to fit a 1998-2002 Firebird. The OEM size is slightly smaller. You might be able to make them fit, but there are existing options that fit and most-likely have better output. The pics on Auxbeam website appear to show a bad beam pattern

I'm interested in see the output of those with the white ring since that style could possibly have a decent pattern. However since they are 4x6, they are still slightly too large (unless these are actually undersized). Also there are some cheap versions with dim output and some with good LEDs and acceptable output. It is a gamble. If you get them, make sure they are returnable. From the mock-up pics and layout, those look like they'll have a fog-light beam pattern though. No real pics of them installed or their output htough.

The H6504 kit will not fit a 1998-2002 Firebird.

The Late Model Lighting kit is basically LMC Truck Housings with LED bulbs. You can buy the housings and bulbs on your own.