On 3/6/2025 at 4:08 PM, SteveJ said:

Auxito H4 LED bulbs: https://www.amazon.com/AUXITO-Bulbs-Brighter-Canbus-Lifespan/dp/B0DK5CSY2P

Steve, the Amazon link describes a "Fog Bulb." Is that what you are using for your headlights? Or is it this one: www.amazon.com/dp/B0DJQP6KMR

I was going order new bulbs for my Hella H4 housings, just want to get the right ones.

Ken

2 hours ago, KenFirch said:

Steve, the Amazon link describes a "Fog Bulb." Is that what you are using for your headlights? Or is it this one: www.amazon.com/dp/B0DJQP6KMR

I was going order new bulbs for my Hella H4 housings, just want to get the right ones.

Ken

I think Auxito labels some as fog lights even though they work as headlights. The one I used in the past is NLA, so I was guessing on the new part number. The one you listed will probably work, too.

On 3/18/2025 at 12:19 PM, SteveJ said:

I think Auxito labels some as fog lights even though they work as headlights. The one I used in the past is NLA, so I was guessing on the new part number. The one you listed will probably work, too.

Hey Steve, I've been looking into polarity-independent LED bulbs as they're seemingly the least intrusive lower-current/higher-output option. I've been doing some searching and I appreciate you sharing your knowledge here! Before I commit to ordering new housings and bulbs, I'm curious whether you're aware of any compatible LED bulbs with a warmer color, like the 3000K "Classic White" which Holley offers? I prefer a more period look when the lights are on.

38 minutes ago, LeonV said:

Hey Steve, I've been looking into polarity-independent LED bulbs as they're seemingly the least intrusive lower-current/higher-output option. I've been doing some searching and I appreciate you sharing your knowledge here! Before I commit to ordering new housings and bulbs, I'm curious whether you're aware of any compatible LED bulbs with a warmer color, like the 3000K "Classic White" which Holley offers? I prefer a more period look when the lights are on.

Did a bit more sleuthing and bought these https://www.ebay.com/itm/357952518138 along with the Toyota Koito housings that you linked! Found the housings cheaper here: https://cruiserteq.com/oem-toyota-koito-h4-headlight-upgrade-kit-w-harness-elec81110kit/?searchid=0&search_query=h4

All-in at about $110, I'm excited to try these out! Hopefully no more melted wiring and better light output.

I've looked at LED headlights off and on over the past few years. But honestly I don't really see a need for it. LED's are great for saving power in a house, boat, or RV. However, for a car that is NOT designed to run LED headlights, you really need to do it right. And, this won't be a $100 option. I've seen cars running around with cheap LED's and the flicker / light output is too annoying for my blood. A proper LED setup will need new drivers (circuit boards), relays, quality bulbs, and some nice wiring. The right setup also won't require cutting your existing harness and it will provide quality output. When I dug further into this venture, I found the Marimoto setup looks like a good one. But you're talking about $400-$600 for the bulbs plus another hundred or so for the wiring. Something to ponder anyway...

FWIW

13 hours ago, Mike said:

I've looked at LED headlights off and on over the past few years. But honestly I don't really see a need for it. LED's are great for saving power in a house, boat, or RV. However, for a car that is NOT designed to run LED headlights, you really need to do it right. And, this won't be a $100 option. I've seen cars running around with cheap LED's and the flicker / light output is too annoying for my blood. A proper LED setup will need new drivers (circuit boards), relays, quality bulbs, and some nice wiring. The right setup also won't require cutting your existing harness and it will provide quality output. When I dug further into this venture, I found the Marimoto setup looks like a good one. But you're talking about $400-$600 for the bulbs plus another hundred or so for the wiring. Something to ponder anyway...

FWIW

Hey Mike, can you please elaborate on what is "the right setup" in your mind? Are you referring to installing relays? What separates Morimoto bulbs from others?

My need is reducing electrical load in the system (headlight switch connector is already partially melted) while maintaining reasonable light output with minimal fuss. The idea of using a low-current, high-output LED bulb instead of installing extra wiring and relays is very appealing to me. Very curious to get these parts and try them out for myself! If my $100 experiment doesn't work, then it's on to other solutions. ;)

@SteveJ has come up with a viable LED solution that has worked successfully for quite a few of us here.

3 hours ago, LeonV said:

Hey Mike, can you please elaborate on what is "the right setup" in your mind? Are you referring to installing relays? What separates Morimoto bulbs from others?

My need is reducing electrical load in the system (headlight switch connector is already partially melted) while maintaining reasonable light output with minimal fuss. The idea of using a low-current, high-output LED bulb instead of installing extra wiring and relays is very appealing to me. Very curious to get these parts and try them out for myself! If my $100 experiment doesn't work, then it's on to other solutions. ;)

Ah yes. The "right setup" would include proper harnessing (no cutting or splicing), relays to isolate the power, adequate drivers for the blubs, no flicker, and adequate cooling. Also my opinion of the right setup would make it look period-correct for the car.

Overall, I believe the only real reason to consider LED is to provide more powerful light output for driving. There's no real power savings needed on a gas powered car unless maybe to support a lower rated alternator.

In my case, I don't really need LED unless I just want to go down that path for fun. I also considered LED's for my Land Cruiser, because the light output is pretty weak. However, I also decided against it because I couldn't find many options that met my requirement above.