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Old 07-29-2008, 03:16 AM   #1
bonesmcgraw
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Default tsx hid retrofit and drl's

I just did a tsx hid retrofit on my 07 2.5i. First let me say that they are amazing. I'm glad I did this mod. So here's my question though. I disabled the drl's a couple of months ago by removing the middle yellow/red wire on the relay behind the glove box. This worked great with the stock halogens but now with the hid's in the drl's are now on again. Oh by the way I have sti ballasts and they are grounded to the chassis and the power wire is the power wire from the stock halogen bulb.

So after doing a lot of searching I haven't seen a deffinate answer to actually disabling the drl's on an 07 non hid impreza. From what I understand removing the middle yellow/red wire on the relay behind the glove box is the same exact thing as unplugging the thing in the engine compartment on the passanger side which is the wrong way to disable the lights. So if this is wrong as it is in my case because the hid's are now on how do I disable the drl's the correct way so my hid's don't come on?

Again please note I have an 07 2.5i. I don't have the g/y wire as the sti's do by the steering shaft as my car doesn't come with hid's stock.

Thanks in advance.
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Old 07-29-2008, 09:01 AM   #2
subaru3169
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i'm not sure if it makes any difference, but you did unplug the relay in the engine bay, right??

coz i did both on my bugeye, and i've never had the drl lights come on again.. even after my retrofit
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Old 07-29-2008, 11:20 AM   #3
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+ 1 to you for doing a retrofit and not just throwing in an HID kit! I don't know much about disabling DRL's on the 07's but I know for mine I just unplugged the DRL cable behind the golve box and that worked for me.

You should post some pics of your retrofit! I would like to see how it turned out.
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Old 07-29-2008, 12:11 PM   #4
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i didnt unplug the relay because i couldnt find a definitive answer on where to locate it... i did however snip (i couldnt get it unplugged) the DRL cable behind the glovebox. and it worked just fine... if you search hard enough you'll be able to find it on this forum.
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Old 07-29-2008, 07:52 PM   #5
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Quote:
Originally Posted by subaru3169 View Post
i'm not sure if it makes any difference, but you did unplug the relay in the engine bay, right??

coz i did both on my bugeye, and i've never had the drl lights come on again.. even after my retrofit
If you're talking about the thing on the passenger side strut tower I didn't unplug that becuase I've read that isn't the proper way to disable them. That it is just a voltage reducer or something like that and although it works for halogens it doesn't work for hid's. I did remove the middle wire in the relay behind the glove box which in reality I hear is the same as unplugging the thing in the engine bay. I guess I can try to unplug it and see what happens. I will let you know if unplugging both works for me.

Quote:
+ 1 to you for doing a retrofit and not just throwing in an HID kit! I don't know much about disabling DRL's on the 07's but I know for mine I just unplugged the DRL cable behind the golve box and that worked for me.

You should post some pics of your retrofit! I would like to see how it turned out.
Thank you. I don't like kits at all. I wanted the real thing. Don't get me wrong there are nice kits out there but they're not for me. I will try to get some pictures up soon. I didn't take many pictures during the process I really wish I would have though but I will post what I have.

The 07's don't have the same relay that the other years have behind the glove box unfortunately. Subaru changed things around for the 07's.

Quote:
i didnt unplug the relay because i couldnt find a definitive answer on where to locate it... i did however snip (i couldnt get it unplugged) the DRL cable behind the glovebox. and it worked just fine... if you search hard enough you'll be able to find it on this forum.
Which wire(cable) are you talking about? The middle wire in the black relay to the left of the blue relay. The yellow/red wire. If so this is the wire that I remove. If it isn't this one you're talking about please let me know which one so I can take a look.

I'm still searching the only problem is there isn't a whole lot of info on the 07's and all the info that is out there for the 07's all say the same thing which is what I have done. Nobody has said anything about being able to get rid of the drl's on a 07 impreza that came stock with halogens. I'm still looking though.

Anybody else have any ideas?

Thanks
Chris
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Old 07-29-2008, 09:03 PM   #6
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when people say a tsx retrofit what does that mean? out of an acura tsx? cuz my mom has that car i may need to steal hers.
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Old 07-29-2008, 09:09 PM   #7
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Quote:
Originally Posted by godforbid67 View Post
when people say a tsx retrofit what does that mean? out of an acura tsx? cuz my mom has that car i may need to steal hers.
Yes that means you take the projectors out of the acura tsx headlights and make them fit into your headlights. Then you just add the hid bulbs and ballast and you have hid's. I personally used the sti ballasts only cause I wanted to mount them to the bottom of the headlights (which is stock for the sti's) and i've heard they are much better than aftermarket ones. I also retrofitted the leveling motors to the back of the headlights.
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Old 07-31-2008, 07:29 PM   #8
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Anybody else have any ideas?
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Old 08-01-2008, 02:40 AM   #9
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Like I said earlier I didn't take a whole lot of pics during the process but here is what I do have:

One of the sti headlights I started with. It came with bulb, ballast, and leveling motor:




Getting tsx projector ready to fit into headlight:


Cuts necessary to get the tsx projector to fit:


Projector ready to be bolted in:




Thats all the pics I have.
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Old 08-01-2008, 10:30 AM   #10
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Subaru's are negatively switched... meaning they get a ground signal and always have hot positive signal.

If you properly disabled the DRL

1. You should really make/buy a negatively switched wiring harness to protect the stock wiring.

or

2. Swap the ground to also connect to the factory plug.
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Old 08-01-2008, 11:17 AM   #11
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It might also be wise to run the (+) for the ballast (not the switch turn-on) directly to the battery.
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Old 08-03-2008, 04:34 AM   #12
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Quote:
Originally Posted by 2007_2.5i View Post
It might also be wise to run the (+) for the ballast (not the switch turn-on) directly to the battery.
Isn't the switch turn the only power wire that goes to the ballast. Then the ballast has the wires going from it to the bulb.

I've heard of people wiring up a relay. Anybody have any thoughts on that. Also anybody have a diagram as to how to wire up the relay.

Also here is a picture of the circuit I had to make to get on 05 switch to work with an 07 harness.

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Old 08-03-2008, 04:44 AM   #13
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Ok I found some diagrams on wiring a relay. It looks like you wire one terminal to the battery, one to ground, one to the headlight switch, and the other would go to the positive on my ballast. Does this sound correct? With it wired like this I don't see how the drl's would come on as the headlights would have there own circuit in a sense. Am I missing something though?

Thanks
Chris
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Old 08-03-2008, 08:52 PM   #14
2007_2.5i
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Lightbulb

That's exactly how the harness I have works, though I purchased it instead of making it. It's better in the sense that the ballasts are drawing their power directly from the battery via a lower gauge wire. I can't remember the exact number, but it is also a good place (between battery and ballast) to put a fuse of some sort.

Your work looks really good! I've got STi ballasts and D2S bulbs in my stock projectors right now, and it's to my liking. I've got a set of TSX headlights in a box, as well as another set of '06 WRX headlights... now I just need the time!
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Old 08-04-2008, 09:55 AM   #15
ptirmal
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Like I said a harness is the way to go but your problem is with the way it was grounded.

If you do buy or make a harness make sure you get one made for our cars or build one with a negatively switched diagram. It's not hard to make or even too expensive to buy...
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Old 08-04-2008, 10:21 AM   #16
2007_2.5i
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Did you find the correct wire to remove behind the glovebox? The one (in the middle of the plug, I believe it is red/yellow,) you mentioned in an earlier post is the ONLY one that I removed. There is no need to unplug anything in the engine bay in the '07. And I did find all of this information in an older thread, so it's out there someplace, maybe search in other threads I've posted to about DRLs because I've linked to it for some other people.
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Old 08-05-2008, 02:52 AM   #17
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Quote:
Originally Posted by 2007_2.5i View Post
Did you find the correct wire to remove behind the glovebox? The one (in the middle of the plug, I believe it is red/yellow,) you mentioned in an earlier post is the ONLY one that I removed. There is no need to unplug anything in the engine bay in the '07. And I did find all of this information in an older thread, so it's out there someplace, maybe search in other threads I've posted to about DRLs because I've linked to it for some other people.
Yah thats the wire I removed a couple of months ago and worked perfect for the halogens but once I conected the HID's they are operating like I never removed the wire. In other words the drls still operate.

ptirmal - are you familiar with wiring? In other words can you explain how to wire it up? I'm looking for diagrams but want to make sure I hook it up correctly.

Thanks
Chris
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Old 08-05-2008, 08:25 AM   #18
ptirmal
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Quote:
Originally Posted by bonesmcgraw View Post
ptirmal - are you familiar with wiring? In other words can you explain how to wire it up? I'm looking for diagrams but want to make sure I hook it up correctly.

Thanks
Chris
Check out this thread if you're a member of hidplanet...
http://www.hidplanet.com/forums/viewtopic.php?t=6612

If not
Quote:
H4 to 9005/9006 (dual filament bulb to 2x single filament bulbs) GROUND switched
Just reread your post - if you want it explained... just pick up a 4/5 prong relay from an auto store... It'll have the pins labeled and you can just connect it as the diagram shows... You need fuses thrown in when connected to the battery and if you want - going to the battery too. The thread I linked details making a harness and is very good if you're not familiar.

Last edited by ptirmal; 08-05-2008 at 08:37 AM.
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Old 08-05-2008, 07:27 PM   #19
bonesmcgraw
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Thank you for the diagram and link. That is what I was thinking but wanted to make sure.

I will wire it up over the weekend hopefully and let you guys know how it goes.

Thanks again.
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