How to convert from hid to halogen

Can for just a minute you scrap the relay just for a second and a wire up the H4 socket and this picture that I'll send in a minute and turn the light on and see if it comes on just for the hell of it it'll only take a second you have nothing to lose. If that interest you I can try and directly send you the picture The car is sitting right in front of me with the headlights out and the sockets still wired up like they were working last month The car is getting ready to go to the scrap yard after I get finished stripping it

 

Ok, I’m so busy that I shouldn’t have tackled this project in the 1st place. I wanted to just go with halogen instead of Led though. Maybe that’s the difference in the “low and high beams on simultaneously” issue between Led and halogen, idk. Thanks for the replies

 

Side note, how good is your coolant pump, the one that diverts to the heater core or whatever?

 

That's the inverter coolant pump you're thinking of I think on the Gen 2 it's on it's behind and below the left headlight it pumps cooler from the inverter through the inverter loop and back into the radiator I guess. I'm not using the stock pump anymore I gave up on those I don't want to pay near $100 for the Toyota branded one which supposedly will last a few years to knock offs won't make 10 months so I'm using the pump that goes in between the brake actuator and the brake ABS pump there's a 14-volt pump that sits up there looks like a little spa pump. I'm not sure what it's pumping for but I took that off an '05 car and put it where my inverter pump was on my '08 and haven't looked back it's moving water like crazy.

 

I saw a fan somewhere in this mix All I am saying is you don't want to go down that road or maybe you do because you want to replace soon I don't know but the fans go to making a racket I have several sets here hanging up I'll be glad to sell to anybody who would like No problem The fans are not cool to me literally

 

There are plug and play LEDs for the HiD bulbs, no wiring changes required. ALLA Lighting makes one.

 

did the hid to halogen conversion recently. seems to work well. followed chad douglas's instructions in post #33 in this thread. will post some photos later.

 

i apparently didnt take many good photos.

(note especially car pink wire to relay red. and car orange wire to relay white. on the driver side.)

 

How did you do this without cutting wires? I have the bulbs, but need sockets, and connectors to plug into the HID vehicle wiring harness.

 

Right the a l l a lighting kit uses the same plug or socket rather that's in your car now that goes to the bulb You remove that bulb from your system and pick up the 12 volt wire already inside your hid housing. And then plug the lamp into the D1D2 whatever that socket is called and before you put everything back together you should be able to turn the light switch on and see the side you just completed turn on the first step and then when you flip the low beam or the high beam switch forward the shutter should lift up move back and allow the full amount of light to show blinding you in the process while you're standing there with the bulb hanging out weaning against some whatever and then you put all that together If you're using a kit that's not made tomato to the d123 or 4 socket assembly that HIDs are using then you'll have to cobble stuff up not a real problem to do but then there's all the splicing in the nonsense I bought this kit that we're talking about here not from a l l a but from another vendor I think it was $39 no plugs no wiring no nonsense literally just take out the d series bulb replace it with the LED plug the little half round socket plug into the socket that's in the car and then pick up the straight 12 volts or else leave it like it is at works but it's using power although just a little of it to light the lamp the new LED from the ballast so when the ballast dies then you'll have to open the thing back up and pick up straight 12 volts to the d series plug in LED or you can do that now makes no difference to me personally.

 

I am in the process of scrapping out he HID from my 2007 Prius. The original post by Texas Hybrid with the relay listed is a few years old, and the Amazon link is not working, but.... when quoting the post, I was able to see the product number/identifier!! It seems you cannot post Amazon links on this site and have them show up properly.

This appears to be the style of relay to use in the conversion process. Just search this part #.

B07V9M7FMH

I've ordered up the new pair of housings, bulbs obviously and the harness already, so just about there. Will get some of these relays, and once it's working, I will go the extra step of getting the Toyota covers that fit over the back of where the bulb goes in.

Dumping the HID is the way to go.

I hope to make a number of pictures of the process, and will gladly post them here once done. I have a helper.

 

I am relying on post # 20, with the clarifying information from post # 33 in order to do the conversion from HID to halogen as best possible.

 

Why are you going to halogen they just get hot and burn up your sockets Why not just convert the HIDs to LEDs with the a l l a kit there are no relays needed going from either way The relays in the car will do just fine been using this this way for many many years with either HID aftermarket HID factory or LED obviously aftermarket I don't see why all of the write-ups are needed and all of the relays and any of this The car already has relays for each headlamp and they are adequate for whatever you're going to put there unless you're putting tractor bulbs or something and then you're not using these lamps assemblies and all of that so there's always that the car is adequately set up with relays already on the lights I'm not sure why you would add extras You're not going to be removing the ones that go with the car they're in the fuse box. So are you wiring around the factory relays to put in wiring relay and the bulb that's already there but I guess carry on

 

Sorry for my late response!

THREE reasons why MANY people, including myself want to "downgrade" from HID to Halogen:

1) Headlamps are now pushing TWENTY years old on some model years, and polishing works, but only for so long.... if you want a BETTER looking car, plus the ability to actually get light where you need it.... replacing the headlamps is the best solution. Ok... so why not just buy new HID headlamps? Because they are really expensive. Instead of $130 for a PAIR, they may be several hundred EACH.
2) HID bulbs and ballasts are themselves expensive. Reliable? Hit and miss.
3) There's safety aspects to consider. You can get electrocuted from an HID system. So there's that. But also, the system can act up suddenly without a lot of warning, and people have experience "black out" night driving where there's no functioning headlamp at all! I'm not going to rehash all of what has been spoken of before.

So, I have done the modification in a 2007 RHD Prius at about 60,000 miles (100,000 kms) after one HID bulb went south. 17-18 model years later, the headlamps were "fogged", and despite one good polich, it only lasted a number of months. True - a bit early by mileage to consider changing out the system, but given the actual age and the inferior appearance, I decided to just do it.

And yes, I did put in relay. Because despite even YouTube videos where the creator says you don't need one in order to ensure you aren't running lows and highs at the same time, it's simple *not true". You should out in a relay - they cost so little, and your lights will perform well in the new headlamps for the rest of the life of the car.

Soldered and heat-shrunk the wires - I elected to "burn the ships" and cut off the HID connectors altogether. Then hooked up a harness after the relay for the bulb to go into. Had assistance on some parts.

It should be stressed to follow posts 20 and 33 and note the revisions to the hand drawn diagram. Also - very helpful if you use a meter to confirm. Help # 1 had the final harness to the bulb in the wrong order. Help # 2 used a meter to diagnose, and was able to manually move the clips on the wires within the housing to the CORRECT position. Lights work perfectly, look great, and provide "BETTER" light where you need it than the aging/timed-out HID system with tired headlamp assemblies.

Toyota DUMPED HID on the 3rd gen Prius, went back to halogen, plus LED.

No, I am not considering any LED bulbs in the halogen set-up. There's no need.

Aimed correctly, and with new assemblies, the halogen system is great as-is. I know, people will say the LED retrofit plug and play bulbs offer more lumens. My question to you is: does the light go where it is needed, and is legal to go? Or are you just blinding oncoming traffic??

 

When you put LEDs in the halogen lenses you have to crank the adjuster down about 8.3 or four turns down and then you'll see your cut off shine on your garage door and then you set that like you're supposed to If you don't move the adjusters then you're blinding people that's the long and the short of it I've converted to HID cars to halogen but in the halogen housings I have s1 LEDs the top of the lines at the time now they're up to the S3 or fours oh well they work great you don't replace them If you buy cheap aftermarket housings you're getting no lens in 6 months they'll be starting to cloud by the way you're talking because any of the factory Toyota lenses on the HIDs or the factories are extremely thick with a slight blue tint to them and if you sand them properly I'm not talking about removing a lot of material they come out very well and if you spray them with some body shop grade urethane they will hold up a long time I also have parking preferences that I pretty strictly adhere to personally I'm in the southeast United States I don't park into the sun everywhere I go I know where I'm going and I have a shady spot to park yeah Walgreens it doesn't matter I know where I'm going and where I'm going to be parking when I get there pretty much like clockwork so my car even though it's outside doesn't spend a lot of time in direct sunlight just because I don't like it to that's the main reason and so the factory headlights hold up a long good time if they're sanded properly and finished off correctly The cheap things that I've bought off eBay and other places 6 7 months and they're starting to fog before you know it they're very clear they don't have the nice blue tinge to them and all that so I try not to do that I'll buy used factory housings and sand them and urethane them after that and they look stellar and if you're lucky enough to have a garage or a carport You're generally should be in good shape unless you're leaving the car sitting in the sun at work for the 8 hours at the job maybe drop a brassiere on it or something I don't know something that will cover your headlights during the day if it's that much of a thing age now I don't drive that much at night anymore but still do sometimes and I do like my headlights nice and bright working properly The Stanley factories are the way to go if you can possibly muster it whether you're sanding them and urethaneating them or buying them new and they are about $280 a pop just for the housings new from Stanley

 

I will be mindful of the time that the new halogen headlamps last to be sure. That is an unknown.

In the meantime, I have two HID headlamps and all the fixins in a box for when someone else wants to give a pro refinishing a go. These came out of a JDM RHD 2007 Prius. Just a right side bulb needs replacing. Ballasts and the other bulb working great and OEM.

 

I would generally get those off another car or whatever usually for near nothing and the lightly sand those and do what we're talking about and then put the a l l a branded D4S to LED kit in those that can eliminate the ballast if I want and just run off the 12 volt or use the ballast and leave them in keeps all the relays and everything in the system working as they should be and gives me extra bright lamps that probably aren't going to ever need to be replaced again now these generally need to go in a HID car because you have the aiming business going on in the back or headlight leveling

 

Great info!

I finally rescued a pair of front impact smashed HID parts for the connectors from the salvage yards so can plan to do the above in a more plug and play with later option to more easily revert back capabilities.

I had no idea regarding the filaments until I read this post. Makes sense.

 

I've not added any relays going on either direction w headlights on a gen2. If I'm doing in his car I use d4s to led bulbs and bypass ballast the hi beam in his is a shutter that electrically lifts up to make hi beam and drops down for lo. There's no extra hi beam filament . . And you're adjusters are automatic still. Going from halogen to LED is h4vled plug n play bulbs and cranking down adjusters about 8 half turns see the cutoff appear on garage door set height done . Not sure about all this relay business completely unneeded your car already has lamp relays no need add more current draw is going down w led not up

 

@James Analytic ....I have been all over the map battling the much-discussed (and cursed) HID headlamps in my 2007.
I went the LED conversion route and it worked fine, but I never could find an LED lamp that provided light of a brightness that I liked.

I finally went the route of doing a full blown conversion to Halogen system. I used relays, new headlight assemblies, and halogen bulbs. It even got rid of the fogged over old headlamp assemblies, too. Total cost for the project was only $161 for EVERYTHING BRAND NEW. The only note I have is that I did a lot of solder splicing of wires, including shrink sleeve. I wanted the conversion to last and be trouble-free. My schematic is crude, but it is correct.

I am extremely happy with this conversion from HID to Halogen and would recommend it to anyone who wants to take the time to do a complete conversion.
Lloyd-ss

Here is my complete post of the process----(sorry for the sarcastic beginning)----