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Old 05-28-2014, 01:48 PM   #1
sier0038
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Default 2015 WRX HID Fog Light Issue

I installed HIDs in the factory fog light housing of my 2015 Limited WRX yesterday. When the HID fog lights work, they look incredible (much better than the weak 19W halogens that come stock). However, the HIDs are very finicky. When I turn on my fog lights, sometimes both come on, sometimes one comes on, and often neither come on. Because of this, I currently have my fogs switched off on the light stalk. I don't want to upgrade my fog lights, and then look like an idiot driving down the road with a fog light (or two) that didn't come on. Anybody have any idea how to fix this issue?

Here are a few pics of the HIDs in the factory fogs if anybody is curious. They produce some glare, but not a terrible amount. I've been eyeing up SubiSpeed's projector fogs for the 2015 WRX, but thought I'd see how these look for a while first.

Passenger side HID, driver side stock.


Night shot.


Bad image of good light output.


And here are three pics of the elusive Galaxy Blue Pearl in some different lighting; the color has so much depth, it looks very different depending on the lighting. I have since gotten 50% tint all around (MN legal limit) and the 3M clear bra on the bumper, fenders, mirrors, and hood (half way up the hood scoop).







FINAL RESULT UPDATE/EDIT (3000K HID projector fog lights installed (from Subi Speed):







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Last edited by sier0038; 06-09-2014 at 10:53 PM. Reason: Final result pics added
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Old 05-28-2014, 01:53 PM   #2
intence01
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What brand of HIDs and Ballasts did you use? Super-low quality HIDs frequently have finicky ballasts or loose connections.

The ballasts require quite a bit of power on startup. If you're having issues when starting the car, this is somewhat common, does turning the fogs on/off resolve the issue?

Depending on what you have know, I would try a reputable brand of HIDs.
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Old 05-28-2014, 01:58 PM   #3
couvar
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Did you use a relay harness?
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Old 05-28-2014, 02:37 PM   #4
sier0038
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Quote:
Originally Posted by intence01 View Post
What brand of HIDs and Ballasts did you use? Super-low quality HIDs frequently have finicky ballasts or loose connections.

The ballasts require quite a bit of power on startup. If you're having issues when starting the car, this is somewhat common, does turning the fogs on/off resolve the issue?

Depending on what you have know, I would try a reputable brand of HIDs.
Turning the fogs on/off doesn't resolve the issue. I went with a super-low COST kit (ddmtuning), but I've used them before on several vehicles and have never had a problem.

Quote:
Originally Posted by couvar View Post
Did you use a relay harness?
No I did not. Think that'll solve the issue?
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Old 05-28-2014, 03:34 PM   #5
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It has for me before and it's safer for the stock wiring.
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Old 05-28-2014, 04:35 PM   #6
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Quote:
Originally Posted by sier0038 View Post
I installed HIDs in the factory fog light housing of my 2015 Limited WRX yesterday.
Highlighted your problem. Super easy fix.
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Old 05-28-2014, 04:43 PM   #7
intence01
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Quote:
Originally Posted by HinshawWRX View Post
Highlighted your problem. Super easy fix.

Even after everything is on/running, he says turning the lights on/off doesn't resolve the problem. I'd try the relay harness first.

Why would the housing make a difference. Or do you mean that the factory fog light wiring isn't equipped to run an HID without a relay harness?

We're not talking about hotspots or the mean pattern, but rather why they're coming on intermittently
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Old 05-28-2014, 04:56 PM   #8
sier0038
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Bought the relay harness w/ one day shipping...should know if that fixes it soon enough
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Old 05-28-2014, 09:54 PM   #9
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I installed the same kit on my 15 STi and I blew my fuse. So what I changed is the fuse to a 10a fuse and that solved the problem. Try that first.
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Old 05-28-2014, 10:16 PM   #10
sier0038
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Originally Posted by Subi114 View Post
I installed the same kit on my 15 STi and I blew my fuse. So what I changed is the fuse to a 10a fuse and that solved the problem. Try that first.
Well, you were right in that my fuse was blown (thanks for that, I probably would have never checked). However, my fog light fuse was already a 10A... so hopefully a relay harness and swapping out that fuse for fresh 10A will do it?
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Old 05-28-2014, 11:13 PM   #11
Martin515
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thats a power issue that a relay will fix. the ballast uses most energy when they are first turned on.
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Old 05-29-2014, 12:25 AM   #12
intence01
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thats a power issue that a relay will fix. the ballast uses most energy when they are first turned on.
+1, on startup the ballasts take a lot of power.

Not sure what the main headlights are fused at, but i've run HIDs in my last few cars without any issues (except sometimes at startup if the vehicle had auto-lights, due the initial power draw).

What else runs on that fuse (anyone know)? The XenonDepot kits claim to use under 4.5A for their Xtreme Kit, and under 6A for their Volt kit, not sure if that's per ballast or for both. DDM is also claiming under 6A (and their kit looks just like Xenon Depot's Volt).

I suppose if it's per ballast, it's not hard at all to blow the fuse. Hoping the relay harness does the trick ... let us know. Good Luck!
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Old 05-29-2014, 04:25 AM   #13
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Quote:
Originally Posted by sier0038 View Post
Well, you were right in that my fuse was blown (thanks for that, I probably would have never checked). However, my fog light fuse was already a 10A... so hopefully a relay harness and swapping out that fuse for fresh 10A will do it?
Sorry just checked my fuse and I'm using a 15a my bad I replaced the blown 10a fuse. And I haven't had a problem at all. I think it uses 6a per ballast so the 15a should do the trick.
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Old 05-29-2014, 04:42 AM   #14
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Quote:
Originally Posted by intence01 View Post

Even after everything is on/running, he says turning the lights on/off doesn't resolve the problem. I'd try the relay harness first.

Why would the housing make a difference. Or do you mean that the factory fog light wiring isn't equipped to run an HID without a relay harness?

We're not talking about hotspots or the mean pattern, but rather why they're coming on intermittently
All the above.

Fogs are not designed to be bright/brighter then the sun.

The housing is not designed for HID. Glaring the piss out of life.

The wiring is not designed for HID. And putting a larger amperage fuse is calling for issues.
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Old 05-29-2014, 04:59 AM   #15
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Quote:
Originally Posted by HinshawWRX View Post
All the above. Fogs are not designed to be bright/brighter then the sun. The housing is not designed for HID. Glaring the piss out of life. The wiring is not designed for HID. And putting a larger amperage fuse is calling for issues.
+1 Yeah you aren't acutllay making the fog lights useful. Of anything you're making them useless under foggy conditions. Also you would be blinding people.. Which could lead into the on coming traffic crashing into you. I know it looks cool but if you have to have Hids in there.. Then leave them off on the streets.
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Old 05-29-2014, 06:48 AM   #16
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Example of what running an HID in a fog light can do.


http://forums.nasioc.com/forums/show....php?t=1660625
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Old 05-29-2014, 05:00 PM   #17
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I've seen HIDs melt thin plastic housings. Gets pretty ugly.

The stock 2015 fog lights are a really really thin plastic in my opinion. That's why they chose the 19w H16.
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Old 05-29-2014, 05:10 PM   #18
sier0038
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Quote:
Originally Posted by Subi Speed View Post
I've seen HIDs melt thin plastic housings. Gets pretty ugly.

The stock 2015 fog lights are a really really thin plastic in my opinion. That's why they chose the 19w H16.
That's something that I'll need to keep my eye on. From scouring a bunch of different forums online, it appears that HIDs actually run cooler than halogens (they are much efficient, so less energy is dissipated as heat). The reason some people have seen issues with melting housings is because the HID bulb is longer than it's halogen counterpart. So the bulb gets closer to the housing which can cause melting issues.
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Old 05-29-2014, 05:27 PM   #19
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Can attest to HID melting stock housing. Was at a CC in Charlotte last year and a guy with a BRZ melted the sh** out of the plastic lens, some of the housing and a few wires were pretty toast. I'd avoid your dealer knowing about anything you have done to the wiring as well.
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Old 05-29-2014, 05:42 PM   #20
HinshawWRX
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Quote:
Originally Posted by sier0038 View Post
That's something that I'll need to keep my eye on. From scouring a bunch of different forums online, it appears that HIDs actually run cooler than halogens (they are much efficient, so less energy is dissipated as heat). The reason some people have seen issues with melting housings is because the HID bulb is longer than it's halogen counterpart. So the bulb gets closer to the housing which can cause melting issues.
What wattage is the HID setup?

While a bulb can be lower operating temps, you're putting excess heat/load through the entire wiring system of the fog light running over 19W.
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Old 05-29-2014, 05:47 PM   #21
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Quote:
Originally Posted by Subi114 View Post
Sorry just checked my fuse and I'm using a 15a my bad I replaced the blown 10a fuse. And I haven't had a problem at all. I think it uses 6a per ballast so the 15a should do the trick.
That's a great way to set your car on fire.
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Old 05-29-2014, 09:29 PM   #22
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Originally Posted by HinshawWRX View Post
What wattage is the HID setup?

While a bulb can be lower operating temps, you're putting excess heat/load through the entire wiring system of the fog light running over 19W.
Typical HID setup draws around 35W.

HID in a halogen reflector housing is a big middle finger to everyone on the road. Please take it out as it will blind people around you. Also, because it will produce a lot of glare, that light will cause your own pupils to shrink at night which will actually make you see worse at night. Another reason why this is a bad idea. Where did this HID in the fogs fad come from?
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Old 05-29-2014, 09:48 PM   #23
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Quote:
Originally Posted by HinshawWRX View Post
What wattage is the HID setup?

While a bulb can be lower operating temps, you're putting excess heat/load through the entire wiring system of the fog light running over 19W.
Not if you use relays
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Old 05-29-2014, 10:23 PM   #24
sier0038
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Well, for all you naysayers, I did indeed take out my HIDs tonight. I tried putting in the relay harness, but they still didn't fire up. So between my newfound paranoia of melting/damaging my front end, the fact that the setup did produce a decent amount of glare, and not getting the damn things to work, I ripped it all out and went back to the weak stock halogens. This isn't over yet though...I'll find a better alternative to the stock fogs.
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Old 05-30-2014, 09:34 AM   #25
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Quote:
Originally Posted by sier0038 View Post
Well, for all you naysayers, I did indeed take out my HIDs tonight. I tried putting in the relay harness, but they still didn't fire up. So between my newfound paranoia of melting/damaging my front end, the fact that the setup did produce a decent amount of glare, and not getting the damn things to work, I ripped it all out and went back to the weak stock halogens. This isn't over yet though...I'll find a better alternative to the stock fogs.
Here ya go:

http://www.subispeed.com/2015-subaru...l#.U4iItR18d8E
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