DIY: OEM JDM HID Headlight Conversion

[DeeBee]

Originally Posted by ezhacker1

H4 Connector is switched ground. Low and Hi has their own ground pin.

Based on Enviri connector photo and pin orientations im guessing

Red Low Beam
Black Hi Beam
Green Parking
Black 12v.

Hi all,

I know this is an old thread but I just found it recently and ordered a set of JDM HID headlights for my ride.

I was hoping to get clarification on the wire orientation to connect from the H4 to the HID connectors.

Black is quoted as 12V, Hi Beam, and in some cases, Ground.
Could you please help me out with the correct orientation.

Thanks in advance,
DeeBee

[govtec]

Originally Posted by DeeBee

Hi all,

I know this is an old thread but I just found it recently and ordered a set of JDM HID headlights for my ride.

I was hoping to get clarification on the wire orientation to connect from the H4 to the HID connectors.

Black is quoted as 12V, Hi Beam, and in some cases, Ground.
Could you please help me out with the correct orientation.

Thanks in advance,
DeeBee

What I did was basically followed the orientation of the 4 prong pins that enviri showed in the videos. If you do that you should be fine and just trace it back to the plugs in the headlight to confirm the orientation.

[DeeBee]

Originally Posted by govtec

What I did was basically followed the orientation of the 4 prong pins that enviri showed in the videos. If you do that you should be fine and just trace it back to the plugs in the headlight to confirm the orientation.

Thank you for your help. I was able to get the wiring done.
I tested them with a battery charger and they worked well

When I plugged them into the car the HID do not come on
All other lights turn on. I know the bulbs work so it must be something to do with the car's stock wiring. I get the feeling there is not enough power to turn on the HID ballasts. I am not using a wiring harness.

Is everyone who has them working using a wiring harness? Please help me solve this before Christmas. I'd like to have them working for a road trip then.

[IllusionX]

Originally Posted by DeeBee

Thank you for your help. I was able to get the wiring done.
I tested them with a battery charger and they worked well

When I plugged them into the car the HID do not come on
All other lights turn on. I know the bulbs work so it must be something to do with the car's stock wiring. I get the feeling there is not enough power to turn on the HID ballasts. I am not using a wiring harness.

Is everyone who has them working using a wiring harness? Please help me solve this before Christmas. I'd like to have them working for a road trip then.

The Yaris have a ground switch. You may have the wires reversed

Sent from my CLT-L04 using Tapatalk

[DeeBee]

Originally Posted by IllusionX

The Yaris have a ground switch. You may have the wires reversed

Sent from my CLT-L04 using Tapatalk

Hi IllusionX,

Thanks for your suggestion. I think the wires are ok since I get power to all other bulbs. In fact I tried swapping positions and the high beams came on at the low beam position.

My suspicion is that somehow there is insufficient power to turn on the HID ballast. I know they work because I have tested them with a portable battery charger and they light up well.

I had a Rav4 where the factory wiring powered HID projectors I had retrofitted without a wiring harness. I drove that for 7 years no problem. I expected the same from my little Yaris

[IllusionX]

Originally Posted by DeeBee

Hi IllusionX,

Thanks for your suggestion. I think the wires are ok since I get power to all other bulbs. In fact I tried swapping positions and the high beams came on at the low beam position.

My suspicion is that somehow there is insufficient power to turn on the HID ballast. I know they work because I have tested them with a portable battery charger and they light up well.

I had a Rav4 where the factory wiring powered HID projectors I had retrofitted without a wiring harness. I drove that for 7 years no problem. I expected the same from my little Yaris

Like stidnam said, you may want to use a voltmeter to make sure you get the correct ground and positive. Halogen bulbs don't care about polarity, but polarity is very important with HID.

H4 was designed with a common ground and 2 positive, but the Yaris has a common positive like mentioned above.

Sent from my CLT-L04 using Tapatalk

[enviri]

yes, the jdm factory HIDs are indeed designed to have both run at the same time when high beams are on. My high beams are regulated to flash duty only.

I have repeatedly blown the 10A fuse, and moved to 15A.

If you want both beams on, I'm pretty sure there will be alot of blown fuses, after the wire kung fu that's needed for it to happen...or you wire the hi beam up like it were a fog light.

I love the adjustment range of the HIDs and it can adapt to us roads well...that cut off is indeed there, but in the US where a vast majority of cars on the road are towering SUVs that blind the crap out of us...either they dont notice it, or if they do...SCREW EM.

*the high beams will definitely blind the other side really badly.

[DeeBee]

Originally Posted by govtec

What I did was basically followed the orientation of the 4 prong pins that enviri showed in the videos. If you do that you should be fine and just trace it back to the plugs in the headlight to confirm the orientation.

BTW govtec,

The videos aren't available any longer so I'm not able to see if indeed my wiring is off.