Replacing HID Headlight Assemblies with Halogen? Has anyone successfully done this

nicholas_wolf117 · Mar 30, 2015

lmyers said: ↑

My husband is rebuilding our 07 Prius that has HID Headlights that were both broken and does not want to go back with HID due to cost. He wants to install complete Halogen Headlight assemblies from our parts car. He has rebuilt several Prius' for friends and family but has not done a change like this so he understands the basic differences but is stuck on the Wiring change to handle the low and high beam differences. Wiring is not his strong point! LOL Has anyone done this that can give specific info?
Click to expand...

Can you let me know if this is able to be done I have an 04 prius and I don't wanna pay the $1500 to fix both of this

Britprius · Mar 30, 2015

nicholas_wolf117 said: ↑

Can you let me know if this is able to be done I have an 04 prius and I don't wanna pay the $1500 to fix both of this
Click to expand...

Can you read a wiring diagram? as I can supply this showing both systems, and help with interpretation . It is not a particularly difficult thing to change the wiring from HID to halogen bulbs. I can help with instructions to complete the work.

John (Britprius)

nicholas_wolf117 · Mar 31, 2015

Britprius said: ↑

Can you read a wiring diagram? as I can supply this showing both systems, and help with interpretation . It is not a particularly difficult thing to change the wiring from HID to halogen bulbs. I can help with instructions to complete the work.

John (Britprius)
Click to expand...

I belive I can read it for the most part and that would be awesome

Britprius · Mar 31, 2015

nicholas_wolf117 said: ↑

I belive I can read it for the most part and that would be awesome
Click to expand...

Have sent you a PM (Private message)

Balloon Bandit · Apr 28, 2015

brokerdelete said: ↑

I got sick and tired of the left or the right or BOTH lights going out and having to turn them back on more frequently than ever on my 2004. And not being an extremely wealthy person, I wasn't about spending money on these expensive bulbs once or twice or ever.

Meanwhile my wife's 2007 with Halogen bulbs (which lit up the road just fine) was working perfectly with no such safety issues, so I thought, hey, why not pop these chipped faded faulty headlights out and put in a pair of new clear Halogen style units in mine? Happy I did. No more troubles. But it's not a direct plug and play solution, so here's what I can share.

First, I bought those female crimp plugs, the large ones that fit the 9003 H4 type bulb prongs. I took the GREEN wire that feeds the fog lights and hooked that up as the running light (looking at the bulb from rear, it's the LEFT prong, the TOP prong is GROUND).

Beautiful, nice and bright, just have to make sure to leave the fog light ring on the headlight switch turned to the on position from now on, then the headlight control works as expected. Low Beam handled.

Next, if I ever wanted bright lights again, I'll need to use the BLUE wire which I hooked up to the Hi Beam filament which is the prong on the RIGHT rear of the H4 bulb.

Here's the PROBLEM. The BLUE wire sends a LOW VOLTAGE feed so my High-Beams are underpowered. This is because it's designed to send a "signal" only, to the HID brain works, when you select the Brights from the inside of the car. It does light up the High Beam filament, and since the Low Beam's are now powered by the Fog lead which goes OFF when in High Beam mode (blue light on dash), it functions as it should... I drove around like this using the High Beam as day-time running lights and switched to Low Beam when it got dark.

LASTLY, I'm going to buy a couple relays. I'll tap into the Side Maker light (orange, side of headlight) positive wire, and make THAT the 12v FULL voltage feed for the brights. Then the BLUE wire will trigger the relay and pass the full 12 volts to the High Beam filament. Now we're done.

This post was designed to share a solution that cost me next to nothing, confirm that hey, you're NOT the only one who wanted to to do this, and confirm YES it can indeed be done - even with no wiring diagram or degree in electronic wiring schematic reading (that post above gave me a head ache).

Cost for a pair of halogen headlights assemblies about $130.00 shipped, plus wire connectors and relays about $40.00 plus $20.00 for a pair of bulbs, and you'll need to spend about $30 bucks at the Toyota dealership for the twist-n-lock rubber round "lids" that keep dust out. The top of a 2 litre coke bottle with 3 holes drilled to allow wires through and a little silicone caulk fits those OEM "lids" perfectly.

The car looks fantastic, lights the road like when my wife's 2007 was brand new, and it took about 2 hours to do (yes you have to remove the bumper cover, see YouTube).

As for Fog Lights, you have two options: You can keep yours, if you don't mind them coming on every time you turn on your Low Beams, just install a splice-connect in-line... or install a fog light button on your dash and run a new power feed to them.

My fog lights were chipped and cracked and I don't need/use them here in SoCal so I chucked those and I put an aftermarket aluminum grille for $50 in down there.

I'm
Click to expand...

Thanks for your post! I am thinking the same fix for my 07 headlights. Did you remove the front reflector when adding the halogen bulb?

Outintheboonies · May 21, 2016

Britprius said: ↑

Can you read a wiring diagram? as I can supply this showing both systems, and help with interpretation . It is not a particularly difficult thing to change the wiring from HID to halogen bulbs. I can help with instructions to complete the work.

John (Britprius)
Click to expand...

John,
Would you be so kind as to send us the wiring diagram also?
We have a 2008 Prius with HID headlights that we'd like to replace with Halogen.
Any advice would be welcomed.

Bobakanoosh · Jul 22, 2016

Alright so I've been reading up and I think I understand how this all works, but I may be wrong. I have a 2007 with the HID's. Long story short I am wondering if I can get a HALOGEN TYPE headlight fixture with aftermarket HID bulbs an ballasts, or do I NEED the HID TYPE headlight fixture? I just am unclear if the correct type lies with the ballast's and bulbs themselves or with the assembly?

Examples of what I'm looking at:

"HID TYPE" HERE

"WITHOUT HID TYPE" HERE

And then I will just buy and install these with whichever assembly I get (which I know work with the original assembly because I've already installed them previously)

What I really would like is this (I think)... This says it is "halogen type" but it comes with HID ballasts and bulbs... I hope this all makes sense.

If anyone can help clarify that would be sweet.

2k1Toaster · Jul 25, 2016

Bobakanoosh said: ↑

Alright so I've been reading up and I think I understand how this all works, but I may be wrong. I have a 2007 with the HID's. Long story short I am wondering if I can get a HALOGEN TYPE headlight fixture with aftermarket HID bulbs an ballasts, or do I NEED the HID TYPE headlight fixture? I just am unclear if the correct type lies with the ballast's and bulbs themselves or with the assembly?

Examples of what I'm looking at:

"HID TYPE" HERE

"WITHOUT HID TYPE" HERE

And then I will just buy and install these with whichever assembly I get (which I know work with the original assembly because I've already installed them previously)

What I really would like is this (I think)... This says it is "halogen type" but it comes with HID ballasts and bulbs... I hope this all makes sense.

If anyone can help clarify that would be sweet.
Click to expand...

You need the HID type for HID bulbs. The reflector itself is different.

OGGIE50 · Aug 11, 2016

Do what i did... check out post #12

Converting HID Headlights to Halogen | PriusChat

Soulbarer · Dec 25, 2017

I was also able to convert from HID to halogen. See this thread.
How to convert from hid to halogen | PriusChat

Replacing HID Headlight Assemblies with Halogen? Has anyone successfully done this

nicholas_wolf117 New Member

Britprius Senior Member

nicholas_wolf117 New Member

Britprius Senior Member

Balloon Bandit New Member

Outintheboonies New Member

Bobakanoosh Junior Member

2k1Toaster Brand New Prius Batteries

OGGIE50 Member

Soulbarer Junior Member

About PriusChat

Quick Navigation

Like us on Facebook

Buy us a beer!

Useful Searches

Replacing HID Headlight Assemblies with Halogen? Has anyone successfully done this

nicholas_wolf117 New Member

Britprius Senior Member

nicholas_wolf117 New Member

Britprius Senior Member

Balloon Bandit New Member

Outintheboonies New Member

Bobakanoosh Junior Member

2k1Toaster Brand New Prius Batteries

OGGIE50 Member

Soulbarer Junior Member