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Old 05-09-2014, 11:01 AM   #1
lazerschool
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Default Hella Horns became possessed

I installed a pair of the Hella supertones in early January. I used the bracket and wiring harness from subimods, and followed the instructions provided.

So let me tell you about the day these horns became possessed. Here I am, driving from MA to NJ to visit family. I'm cruising down the rt 95 and I hear someone blasting a horn. I look around to see who the a-hole is, no one really near me, and i realize... IT'S ME. I get it to stop by pressing the horn a few times. Well, this didn't stop there. It got more and more frequent. Anyone who has these can imagine the awkwardness of sitting in traffic, and having your super F#$%ing loud horns going off uncontrollably! Well, this all finally culminates as I am driving over the Tappan Zee Bridge. The horns go off, and this time I cannot get them to stop no matter what i did. I ended up driving the entire length of the bridge, blasting everyone in front of me. Finally after the bridge I was able to pull off. The only way i could stop the horns, was to cut the ground wire to the battery.

Has anyone out there ever experienced this? I am guessing that the relay is what failed, but i assumed a failed relay would just mean the horn wouldn't work, not always work!

I had ziptied the relay behind the front bumper beam, as recommended by the install, but I guess it wasn't safe there from the harsh new england winter. If the relay is the cause of this, it only lasted 4 months. Can anyone recommend better places to mount the relay, that have stood the test of time?

Also, any recommendations of a good relay brand? Are some more weatherproof than others? Has anyone every explored weatherproofing one? I'm considering covering the new relay in clear silicone.

thanks!

p.s. if you happened to be driving on 95 south recently and some lunatic in a WRX was blasting his horns for no reason... I'm sorry.
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Old 05-09-2014, 11:08 AM   #2
silverstreak02
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This happened to me one night driving home. All of a sudden my horns were wide open and nothing would stop them. My relay shorted on I had to replace it. I replaced with a standard relay from O'reilly's and haven't had a problem since. I'm assuming it got hot or something because of where I had it mounted, so now it hangs out on the front side of my battery behind the headlamp and haven't had any problems *knock on wood* since. That was over a year ago.
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Old 05-09-2014, 11:11 AM   #3
Sour_K
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Just commenting because the visualization of this is hilarious. I just picture you driving down the street with Hellas blaring at 100+ decibels and mouthing sorry/waving at everyone in front of you or you pass. Sorry! Sooorrryyy!! I'm sooorrryyyy! I bet you got some odd looks hahaha. Wiring isn't my cup of tea, but I'm planning on doing Hellas this weekend so I'd like to know what the problem was in case I run into the same thing.
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Old 05-09-2014, 11:11 AM   #4
2004wrxy
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I had the same issue a few years ago, relay filled full of water. Horns were on steady.

Relocated relay to a more protected area, mounted it so the open area was pointed down.
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Old 05-09-2014, 11:17 AM   #5
CleanImpreza
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haha that happened to my friend's alarm system, just kept going off the whole way home, POS ricecar too
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Old 05-09-2014, 11:18 AM   #6
lazerschool
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Quote:
Originally Posted by Sour_K View Post
Just commenting because the visualization of this is hilarious. I just picture you driving down the street with Hellas blaring at 100+ decibels and mouthing sorry/waving at everyone in front of you or you pass. Sorry! Sooorrryyy!! I'm sooorrryyyy! I bet you got some odd looks hahaha. Wiring isn't my cup of tea, but I'm planning on doing Hellas this weekend so I'd like to know what the problem was in case I run into the same thing.
Dude, it was soooo awkward. At one point I just put my hazards on, to try to let people know I had a problem. But then I realized I was just letting everyone know exactly who that ahole was. I had lots of people flipping me off that ride.
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Old 05-09-2014, 12:01 PM   #7
Sour_K
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Quote:
Originally Posted by lazerschool View Post
Dude, it was soooo awkward. At one point I just put my hazards on, to try to let people know I had a problem. But then I realized I was just letting everyone know exactly who that ahole was. I had lots of people flipping me off that ride.
Haha, that is definitely cringe worthy, I'm sure all you could say was "well, that was embarrassing." If you didn't have to watch the road I'm sure your head would have been in your hands the whole way home. From all the other responses in here it seems like the relay is the problem. I would just try to tuck the new one away somewhere that the weather can't get to it. I live in slc, ut. The winters aren't as harsh as New England by any means but we still get some pretty big storms.
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Old 05-11-2014, 01:09 AM   #8
dbake
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Same **** happened to me, the ground wire was ****ed. Here's the threadhttp://forums.nasioc.com/forums/showthread.php?t=2614883
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Old 05-12-2014, 09:19 AM   #9
lazerschool
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Thanks for all the feedback and information.

I never thought about the ground wire being a bad contact. I didn't think this was the problem, since as i mentioned, i finally got the horns to stop by cutting the ground wire from the wiring harness to the battery, but after reading through the thread that dblake posted, it sounds like there is a grounding problem with the horn switch which is worth checking out.

I think im going to just buy a new relay too, since they are cheap, so i have all the parts ready when I get in there to fix it. The worst part about this is finding the time to pull the bumper cover off to troubleshoot all this...
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Old 05-12-2014, 10:01 AM   #10
Chiba
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So ... I shouldn't get the Subimods relay?
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Old 05-12-2014, 10:36 AM   #11
tuzzio
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The subimods relay is just fine if you run it properly so moisture can't get into it.

Or you can wire them without a relay. Connect one prong to stock harness, ground out other prong. Boom.
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Old 05-12-2014, 12:08 PM   #12
lazerschool
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The nice part about the subimods wiring harness is that it come with all of the proper connectors for interfacing with the trigger for the old horns and the tabs for connecting the hella horn.

The problem is that there is not a lot of extra length to mount the relay anywhere but in the front grill area of the car, so as they recommended i mounted it behind the front bumper beam. Assuming my relay died, and was the cause of this (i haven't gotten in there to troubleshoot it yet), then this was not a good location.

I am most likely going to just get a new relay and move it to a more protected location similar to what silverstreak02 and 2004wrxy suggested above. I did some looking around and found a nice diagram in another thread here: http://forums.nasioc.com/forums/show...39&postcount=4
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Old 05-12-2014, 01:13 PM   #13
Subrosa90
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I had the same exact issue with mine after this past winter. I pulled the relay and it was pretty corroded. After replacing it, I wrapped it up in electrical tape tightly and remounted it in the same location. Haven't had a problem since.
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Old 05-12-2014, 01:15 PM   #14
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I never liked how the relay was exposed like that so i put like 5 ziplock bags over it and taped it to keep rain out. 2 years running and no issues.
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Old 05-12-2014, 02:13 PM   #15
Perscitus
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Best harness by far for the Hellas (and I've tried four flavors on three Scoobies) is the Lightwerkz one.
http://shop.lightwerkz.net/product_i...products_id=12

Its pre-wired to support in-line OEM horn/s too so you can get tri-/quad-horn noise too!

Great for moose, rhinos, tractor trailers, raised Pickups/Jeeps and SUVs rolling on 30s alike.
And for those priceless moments when a random $#@^& cuts you off or swerves into your lane on the highway.
Complete dB overload enjoyment.

BTW, not many people know that Hella offers a few types of horns.
In their self-titled 'best-in-class' range, they have Super Tones but also Sharp Tones.

A friend installed the Sharp Tones on his Legacy and the sound is also great!
A nice alternative to all the Scoobies (and every other modified car out there) with Super Tones.

http://www.hella.com/hella-sg/assets...s_Brochure.pdf
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Old 05-12-2014, 02:16 PM   #16
ShadowIMg
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I hope Subimods has improved their **** by now, but in case they haven't and this is your issue: http://legacygt.com/forums/showthrea...ck-170362.html
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Old 05-12-2014, 10:36 PM   #17
kh15
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had this issue as well. Now I pop the cover off my relays and silicone them back shut, no issues since.
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Old 05-13-2014, 08:39 AM   #18
lazerschool
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Quote:
Originally Posted by kh15 View Post
had this issue as well. Now I pop the cover off my relays and silicone them back shut, no issues since.
YES! This is what im talking about. Glad to hear someone else has done this.

A mechanic friend also suggested i just wrap the relay in mastic tape. I didn't know this stuff existed, but it's pretty awesome. Its self sealing, electrical insulating, and used to keep weather and moisture out.
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Old 05-14-2014, 10:46 AM   #19
matigas_TT
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Aha! This happened to me as well! Now my horn sounds like a wuss.. I need to relocate most of my wirings then
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Old 05-14-2014, 10:56 AM   #20
ShadowIMg
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You really shouldn't be mounting the relays, or any relays, somewhere they will be soaked in water. This is true of most anything under the engine. As long as it sees "normal" amounts of water, and you mount it upright, you shouldn't need to seal anything.
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Old 05-14-2014, 10:03 PM   #21
borderguy
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My Subimods harness I bought never worked in the first place. Only worked one time when my horns decided to set themselves off at 4am randomly and I jumped out of my bed with my gun because I thought I was being robbed.
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Old 05-14-2014, 10:40 PM   #22
Hatchtastic
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Damn I just installed these last weekend (amazing improvement over stock btw). Luckily by bumper is sitting in my living room as I perform my retrofit. One more thing to do before I button her back up tomorrow!
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Old 05-15-2014, 03:42 PM   #23
Perscitus
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For anyone looking to install Hella Horns using the Subimods bracket - here is some info from Subimods for the 2015s:

Quote:
we actually have test fit the bracket and wiring harness on our 2015 STI here and determined that with a 1-inch spacer and new bolt we can fit the bracket. We are currently making a new listing on the web store for the bracket with spacer and bolt.
As for the harness, we do know that the trigger wire is completely different which is forcing us to adapt the design of the harness greatly.
Quote:
with the new latch design it would make fitting a bracket very tough so we decided that the best bet would be to avoid the latch completely and when we test fit the bracket with the spacer, I felt it looked better due to the fact the it brings the horns closer to the grill. There is a much larger gap between the latch and grill on this model.
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Old 05-16-2014, 01:26 AM   #24
13WRX90
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Quote:
Originally Posted by borderguy View Post
My Subimods harness I bought never worked in the first place. Only worked one time when my horns decided to set themselves off at 4am randomly and I jumped out of my bed with my gun because I thought I was being robbed.
Stuff like this makes me nervous. I should have my Hella's tomorrow and I'd hate to have them go off randomly, last thing I want to do is rush out the door at 3am, wire cutters in-hand, just to shut them up.
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Old 05-16-2014, 08:32 AM   #25
lazerschool
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Quote:
Originally Posted by 13WRX90 View Post
Stuff like this makes me nervous. I should have my Hella's tomorrow and I'd hate to have them go off randomly, last thing I want to do is rush out the door at 3am, wire cutters in-hand, just to shut them up.
I wish I had wire cutters when this happened to me! I was sitting on the side of the highway with the horns just blasting, and realized i didn't have any tools in my car. The only thing I had to cut the ground wire with was a pair of nail clippers that my girlfriend had in her purse.
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