KZJ78 headlight upgrade

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Hey Nick, When you installed your LED bulbs, did you have to relocate the coolant reservoir? In the LJ78, the reservoir is right behind the passenger side headlight and doesn't allow room for the heat sink that extends out the back of the bulb.

I've been considering getting an aftermarket coolant reservoir and mounting it where the headlight washer bottle used to be so I can use LED bulbs, but that's starting to get up into TruckLite territory as far as cost.
 
Living in a deer infested area I've gotten tired of the dim sealed beam headlights and am looking to upgrade. I took advantage of a black friday deal on a pair of LED headlights, but upon trying to install them I discovered that the Prado headlight bucket tapers too much for most of the off-brand LED headlights in this size.

H4 conversion housings seem to be the next best option, there are several available with glass lenses for a decent price, and will take either regular halogens or LED conversion bulbs. One thing that I am curious about for those that have converted to an H4 style bulb, whether it be halogen or LED: did you have to use an aftermarket harness to get around the negative switching Toyota used? Is the wiring different on Prados that came with the stock H4 housings?
 
Living in a deer infested area I've gotten tired of the dim sealed beam headlights and am looking to upgrade. I took advantage of a black friday deal on a pair of LED headlights, but upon trying to install them I discovered that the Prado headlight bucket tapers too much for most of the off-brand LED headlights in this size.

H4 conversion housings seem to be the next best option, there are several available with glass lenses for a decent price, and will take either regular halogens or LED conversion bulbs. One thing that I am curious about for those that have converted to an H4 style bulb, whether it be halogen or LED: did you have to use an aftermarket harness to get around the negative switching Toyota used? Is the wiring different on Prados that came with the stock H4 housings?
Interesting, I got led housings on Amazon and they fit just fine. I did, however, have to get a relay for them because of the negative switching. They were inexpensive and easy to wire in as well. This is in my 95 kzj78 Prado. I can take pictures tomorrow of the lights and the harnesses after work.
 
Interesting, I got led housings on Amazon and they fit just fine. I did, however, have to get a relay for them because of the negative switching. They were inexpensive and easy to wire in as well. This is in my 95 kzj78 Prado. I can take pictures tomorrow of the lights and the harnesses after work.
That would be great. From what I can tell most of the cheap 5x7 LED headlights are fairly deep and do not taper much. The expensive ones like TruckLites appear to be quite a bit thinner, but I can't justify dropping $500 on new headlights right now.
 
That would be great. From what I can tell most of the cheap 5x7 LED headlights are fairly deep and do not taper much. The expensive ones like TruckLites appear to be quite a bit thinner, but I can't justify dropping $500 on new headlights right now.
No worries. Mine were around the hundred dollar mark and didn't have an issue with fitment. I might still have a spare set of relays if you're located in Canada. I'll check my spare parts bin.
 
I installed these. I've only had them installed a few months, so I have no comments about their durability or longevity, and I've never seen the more expensive versions for comparison...

All the caveats aside, they are a massive improvement over the factory halogen and were less than $100 for the pair. They were relatively easy to install... I spent more time tapping into the turn signals and dealing with the grill than anything else. I do wish the wiring bundle had been slightly longer to give more options for where I mounted the relays and routed the wire bundle. I can't remember whether I needed the extra relay harness or not. Nobody has flashed me yet, so the directional bias and vertical control of the light must be fine for oncoming drivers. In general, I'd give these lights maybe a 'B' in absolute terms - they're good but don't blow me away - but an 'A+' in terms of a value solution. That could change if they break soon.

Amazon product ASIN B09CQDCH7D
 
105W Brightest 5''x7''/7''x'6'' Projector Led Headlights with DRL for Jeep Wrangler YJ Cherokee XJ H6054 H5054 H6054LL 69822 6052 6053 (Black Pair) https://a.co/d/auCJ8I4

These are the ones I have. Huge improvement over stock, but you need the proper wiring relays for them..

Good luck! Hope this helps, keep us updated!
 
Thanks for the input everyone. I have decided to get a set of H4 conversion housings so I can run either H4 bulbs or LEDs. I have read that many LED headlights don't make enough heat to melt off snow in the wintertime, something that is definitely a concern where I live. Thinking I will try LED bulbs, but still have the option to switch to halogens during the winter if that is necessary. I have an H4 harness already, purchased to use with the LED headlights that didn't fit.
 
Thanks for the input everyone. I have decided to get a set of H4 conversion housings so I can run either H4 bulbs or LEDs. I have read that many LED headlights don't make enough heat to melt off snow in the wintertime, something that is definitely a concern where I live. Thinking I will try LED bulbs, but still have the option to switch to halogens during the winter if that is necessary. I have an H4 harness already, purchased to use with the LED headlights that didn't fit.
That is a very valid point. If it's wet "elephant snot" snow it definitely sticks to the lens. If it's cold winter snow like we typically have in the Rockies it's not a concern. They do make ones with heater filament in the lens. That's what I'd get next time.
 
There have been a few times driving in extremely cold temperatures with snow or in freezing rain where even my sealed beams will start to ice up. Couple that with the defroster not being able to keep up makes for some unpleasant driving experiences.

Looking up headlight parts for my frame number the only option is a Koito housing with an HB2 bulb, no sealed beam units shown. How does the stock wiring handle that with Toyota's negative switching? I was under the impression that H4 or HB2 bulbs would not work with the stock wiring/switching.

Screenshot 2023-12-13 at 11.02.02 PM.png
 
There have been a few times driving in extremely cold temperatures with snow or in freezing rain where even my sealed beams will start to ice up. Couple that with the defroster not being able to keep up makes for some unpleasant driving experiences.

Looking up headlight parts for my frame number the only option is a Koito housing with an HB2 bulb, no sealed beam units shown. How does the stock wiring handle that with Toyota's negative switching? I was under the impression that H4 or HB2 bulbs would not work with the stock wiring/switching.

View attachment 3506565
Your comment about the defroster not being able to keep up hits home haha. I'm going to duct tape all of my joints in my HVAC to hopefully help get some more air on the screen.
 
Use aluminum tape instead
Oh yeah that makes more sense! I've got a whistle coming from a vent pipe when it's on defrost that is driving me mildly up the wall.
 
No, not needed. I’ve been running those lights in my KZJ for the past year with no issues.
 

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