I wanted to change the dinky sounding horn we have in our tC so I got some Hella Twin Supertone (part# 85115) which is rated at 118db, one horn has a 300Hz low tone and 500Hz high tone Basically leaving a binging sound in your ear if you are right in front of it :P

Safety 1st - take out the ground from your battery and this is a D.I.Y. so don't blame me and I take no responsibilities...proceed at your own risk!

now on with the swap...

Open your hood and you will see you horn infront of the radiator. unclip harness and unbolt them using a 12mm socket or open wrench.

Comparison of the stock horn and the hella
http://www.scionlife.com/tech/images/horn_install_tc/DSC00089.JPG

Comparison of the stock horn and the hella mounted
http://www.scionlife.com/tech/images/horn_install_tc/DSC00090.JPG

Since the stock horn used the bracket as the grounding point so I also followed suit.
http://www.scionlife.com/tech/images/horn_install_tc/DSC00091.JPG

Now connect the 2 positive terminals and tap one of the horn harness(which is a positive trigger) for the relay. (solder and tape or crimp...doesn't really matter as long as the connection is good)
http://www.scionlife.com/tech/images/horn_install_tc/DSC00092.JPG

Ok since this horn has a high current draw it came with relay(highly recommended eventhough our factory horn is a postive trigger)

relay diagram care of www.the12volt.com
http://www.scionlife.com/tech/images/horn_install_tc/relaytextA.gif
connect the following:
85 - Ground
86 - Positive Trigger from Horn Harness
30 - Constant 12volts(FUSED - I placed a 7.5amp)
87 - Positive Terminal from Hella Horn
87a - N/C(no connection)

Here's my wired up relay with my fuse and ground wire(use of split loom is optional but would look nice :P )
http://www.scionlife.com/tech/images/horn_install_tc/DSC00096.JPG

I mounted the relay on the bolt(10mm) holding down the airfilter box next to the battery
http://www.scionlife.com/tech/images/horn_install_tc/DSC00097.JPG

All you have to do now is connect the fused wire to the positive side of the battery, ground your relay( I used the same bolt where I mounted the relay ) and replace your ground from your battery.

picture of the finished install....
http://www.scionlife.com/tech/images/horn_install_tc/DSC00098.JPG

Honk away guys and wake up all those sleepy heads on the street :P

Awesome! Thanks for the tutorial, Hubert. I bought some FIAMM Highway Blasters yesterday, but wasn't impressed with them. Would it be possible to record the new supertones...versus your xB's stock ones?

Thanks!

btw, added to the tech section. It'll be moved to the FAQ section in a week or so.

also...
http://www.scionlife.com/tech/images/horn_install_tc/DSC00098.JPG
^^^ looks like a robot or something... red eyes, blue mouth... :lol:

Awesome! Thanks for the tutorial, Hubert. I bought some FIAMM Highway Blasters yesterday, but wasn't impressed with them. Would it be possible to record the new supertones...versus your xB's stock ones?

Thanks!

btw, added to the tech section. It'll be moved to the FAQ section in a week or so.

looks like a robot or something... red eyes, blue mouth... :lol:

your welcome man glad I can add some tech. as far as recording the sound I'll see if I can do it tom...I'm thinking I'll be infront of the car since my friends now walk behind my car everytime they see me in it :rofl: :rofl: :rofl: but yeah these things blast!

i thought the same way when I say it cause I have red neons on the top grill and white on the bottom....

Nice write-up! I'd like to hear the horns too, if you ever get around to recording them. I've thought of replacing mine, but I'm not sure if I just want to buy some new ones or go to a junkyard and see what I can find. Some old American cars have some serious horns!

if you could put up that recording of the horn that would be awsome

oh hell yes . . . here comes the Dukes of Hazzard horn!!!!

any update on the recording?

any update on the recording?

bump

*update* 06-15-05

sorry for the long delay but here is the sound clip from the hella's also thanks to matt(SGMgms) for recording the clip.

so here you go ..:Click Me".. (http://fuy6424.tripod.com/crxb/HellaHorn.wav)

Hope this helps guys,

Price?

The cheapest I found was $57 here: http://www.truckcustomizers.com/products/-DM/K4HLA261.1.html

yeah they range from $60-$80 everywhere

could anyone hear the sound clip? For some reason when I tried to listen to it all I herd was silence.

could anyone hear the sound clip? For some reason when I tried to listen to it all I herd was silence.
I heard it fine. Turn on your speakers, perhaps?

I got it to work on my other computer, one of mine is f ing up for some reason.

yup they sound like any other horn... probly just louder

i think the factory ones aren't that bad. at least they don't sound that 'F' note that american cars have. THOSE sound so wimpy, almost like like a loud whimper. My friend was being a butthead and blocked me so i blared the horn for a good 20 seconds at him and he said 'damn your horn is loud!' well i guess it's all relative...

I have Camry horns, sound better than stock ones :)
plug and play

Try here:

http://www.lildevilmotorsports.com/hella-twin-supertone-horn-p-5346.html

nice diy!

i'm thinkin of puttin a train horn on mine

www.hornblasters.com

prolly scare the ____ outta people havin' a little tC runnin aorund with a train horn attached

haha...the train horn is so awesome but I don't want to have to lug around the air compressor. The video is awesome though!

would anyone be able to rehost the clip of the horn? tripod says they dont have it anymore....

The wimpy sounding OEM horns were the first thing I replaced on my car. Used PIAA sport horns. nicer louder tone, but not quite train horn loud. No need for new relays, Just plugged/spliced in the original wires from the OEM horns. Well worth the 46 bucks I paid for them.

Chombi
05 FM tC

I'll host the file. I'm having trouble listening to it too. e-mail me the file and I'll host it. whiteblazer01@cox.net

hey guys.... i would say that installing a horn is pretty simple...
for me.. i got a little something extra than Hella's.. here's some pics and a vid. :P

specs:
low 400 Hz
high 480 Hz
113 dB

Mitsuba Arena II's
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_c4c39115.jpg (http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/c4c39115.jpg)
can't read japanese.. but colored diagram... w00t!
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_164_6487.jpg (http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/164_6487.jpg)
hmm.. where to mount box... sure.. here..
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_164_6481.jpg (http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/164_6481.jpg)
hmm.. all installed.. ignore hairy leg... o.0 but note scion sandals.. :P
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_164_6480.jpg (http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/164_6480.jpg)
shot from front
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_164_6479.jpg (http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/164_6479.jpg)
ready to test... let's see.... let's do 2 regular honks.. and then the umm.. 'special' one.. :P
http://i16.photobucket.com/albums/b28/SquallLHeart/Rei/th_164_6485.jpg (http://s16.photobucket.com/albums/b28/SquallLHeart/Rei/?action=view&current=164_6485.flv)

Very nice Trung! Sounds good too! I'm thinking I should put one on my bike.... :)

thanks Paul!

it took FOREVER for Super Autobacs to restock these... i kept going back month after month with no luck (when i was still living in San Diego, i made frequent trips to LA and stopped by)..

but when Triathlon rolled around and me and my buddies went to SoCal.... hehehe... w00t!!!

CRxB - thank you for the DIY!!! I have just bought a set of these on TruckCustomizers.com - came out less than $62 shipped!

I read a different how to on here that shows how to replace the stock xB horns with the Hells Twin Supertones.... but I am going to go one step further!

Instead of replacing the stock ones, I am going to keep them AND connect the Hellas' as well! When I am done, both horns will sound when I use the stock horn button on the steering wheel! lol!

But why stop there? I am doing 1 more thing to make this thing real effective....

I have an absolutely stock xB with stock nose/grill. I am going to remove the grill and mount the hellas like this:

http://home.nyc.rr.com/singhconsulting/misc/hornmount.jpg

But since the stock xB grill is sort of thick and, i feel, would prevent the horn sound from escaping the engine compartment, I AM THINKING OF DRIVING AROUND GRILL-LESS FOR A WHILE! LOL! no, im serious! i am going to put the grill on after installing the horns but if i feel that the grill is muffling the sound by any amount, im throwing the grill in the trunk of the xB and driving around without one!

I am going to mount the horns as shown above but i will angle each of them to the left and the right - about 15 or 30 degrees in either direct. this will maximize the "blast zone" hahahahaha!
- sh00k

thanks for the details i just installed hellas on my xa

I AM THINKING OF DRIVING AROUND GRILL-LESS FOR A WHILE! LOL! no, im serious! i am going to put the grill on after installing the horns but if i feel that the grill is muffling the sound by any amount, im throwing the grill in the trunk of the xB and driving around without one!
you do realize why the top xB grille is normally blocked off.. yes? perhaps you should find out before you go grilleless.. especially if it's still hot outside (that's probably too late anyway....) but yeah.. i would put it back on asap if you haven't already.

and if you can't find out... i'll tell you then... actually here... i'll push you towards the right direction:
http://www.scionlife.com/forums/viewtopic.php?t=101528

Dude - I installed 2 sets of the Hella horns on my xB! hahahahaha! check out my thread here http://www.scionlife.com/forums/viewtopic.php?t=135344 and here is a teaser pic! lol ;]
- sh00k

http://home.nyc.rr.com/singhconsulting/misc/4horns1.jpg

ps - im getting another grill for the xB - something that will let the sound out!

Yeah, the stock horn is pretty wimpy. I'm definitley going to replace mine. Nice DIY.

Dude - I installed 2 sets of the Hella horns on my xB!
:shock:....

Hey I just got these in and just had to hear them now so i popped them in without the relay. With the way our horns are wired do you really need the relay?

^^^ many people say no, but I wanted to be safe. I am not a big car/electrical person so rather than TRYING to just plug in the new horns to the existing harness, I followed the directions (link in my signature below) and did it that way.
- sh00k

i'm considering the hella horns but i don't like that they're red. those of you that have handled them, if i were to remove the 8 screws would the red part come off? if i can take it off and paint it flat black i will definitely do this.

i'm considering the hella horns but i don't like that they're red. those of you that have handled them, if i were to remove the 8 screws would the red part come off? if i can take it off and paint it flat black i will definitely do this.

Yup... a lot of Subaru owners paint them black...

I just got a lexus es300 horn.. supposodly it's the same connectors as the stock tC's horn.. do i unplug anything from the battery? or can i just unplug the stock horn, and then plug in the es300 horn??

I just got a lexus es300 horn.. supposodly it's the same connectors as the stock tC's horn.. do i unplug anything from the battery? or can i just unplug the stock horn, and then plug in the es300 horn??

do you have any pics? sound clips? cuz the more i think about it, i would rather not splice cables. i would like to find something better that will be a direct fit.

it looks like its the same plug.. like i unplug the stock horn and plug the same cable into the es300 horn.. i was just wondering if i can just unscrew and remove the stock horns, unplg them then plug in the new horn and mount it.. or if i have to remove the battery terminals or some ground cables or something



also.. the damn guy that sold me it, i didnt realize until i just got it, that i only got 1 horn.. the tc has 2.. can i unplug one and leave it unplugged and just have the es300 horn plugged in? or does it require both to be plugged in to make a connection!?!

anytime you mess with anything electrical, it's recommended that you disconnect the negative cable. i don't think anything will happen if you don't, but it's best to play it safe. i would think nothing will happen if you're only using one. what if you use both at the same time?

how much did you pay for it?

shouldn't have any issues with just using one.

sorry, i just read my post and perhaps i wasn't clear when i said using both. i mean, why don't you try using both the lexus horn and the tc horn at the same time? it might turn out to be an interesting combo!

well the lexus horn is low and not as high pitched/annoying.. i paid 27 bucks for the es300 horn.. sounds alot different..

low is good. :) would you say it's louder?

well seeing as how i only have 1.. its not louder.. if i had 2 then yah it would be louder, but low pitched.. the tc horn has an ear piercing sound.. the es300 doesnt..

does anyone have a recording of the lexus horn? I'd like to hear it.

ill see what i can do to get a recording with one vs the other..

A couple of my buddies used these horns. Go to the products link, click on the car icon on the bottom left side and click on the GP/GPA series.

http://www.stebel.it/stebel/index2006.htm

Is the hella horn NOTICEABLY louder than the stock tc horn?

I did the install yesterday. Your instructions were well done, but they've changed the relay from your pictures, so future installers should double-check the Hella instructions.

Yes, it is significantly louder than the stock horn.

Here's the stumper, though. I discovered this morning that while my windows will roll down, the automatic part of the switch doesn't work any more, and the switch on the driver's side doesn't roll down the passenger's side window any more.

Any thoughts on what may have gone wrong? I disconnected the battery before I started working, and I never did anything that should have affected the doors in any way.

I appreciate anyone's insight!

well seeing as how i only have 1.. its not louder.. if i had 2 then yah it would be louder, but low pitched.. the tc horn has an ear piercing sound.. the es300 doesnt..es300 is a duel horn, u got both installed?

Here's the stumper, though. I discovered this morning that while my windows will roll down, the automatic part of the switch doesn't work any more, and the switch on the driver's side doesn't roll down the passenger's side window any more.

Any thoughts on what may have gone wrong? I disconnected the battery before I started working, and I never did anything that should have affected the doors in any way.

I appreciate anyone's insight!
you need to reset the windows and sunroof. read your owners manual.

Can you post a sound clip of the hell horn? the original sound clip link isn't working anymore.

Here's the stumper, though. I discovered this morning that while my windows will roll down, the automatic part of the switch doesn't work any more, and the switch on the driver's side doesn't roll down the passenger's side window any more.

Any thoughts on what may have gone wrong? I disconnected the battery before I started working, and I never did anything that should have affected the doors in any way.

I appreciate anyone's insight!
you need to reset the windows and sunroof. read your owners manual.

I'd never have thought that I needed to reset some computer. It seems to have reset itself, though. Thanks for the help!



@mdMike: I can't; I have no way to record the sound. Sorry.

I=W/V...according to Hella horns spec....72w max....so I=72/12=6amps...if stock horns has a fuse of bigger than 6 amps..do i really need a relay at all? unless two of them added up to 12 amps...just a question..72w each?

i just bought some PIAA sport horns.

i installed them, but when i tried them, they sounded the same as the stock horns. and its not noticeably louder :/

in the box, it came with 2 horns, 2 ground wires, and an instruction manual. no relay or anything. can this possibly be why they arent louder? do i need a relay?

no... that's not a possibility of why they're not louder.

you don't need a relay

ooo ic ic hmm

maybe i should get the hella horns then

thx sualllheart

what does the relay do then ?

Yeah, why is there a need for the relay?

*watches

A relay would prevent the horns drawing too much current through the stock wiring harness. Similar when switching to HID. The headlight leads are such a small gauge that the initial start up draw from the HID ballast will eventually burn through the wiring insulation. As far as the horns go the stock wiring should be fine unless you switched over to an air horn setup with a high current pump.

I used stock Harley Softail horns on my tC without issue. The gauge of wire HD uses is actually smaller than on the tC, so I didn't install a relay. I was going to go with some "land yacht" style horns from the 70's or so, but I have always liked how the horn sounds on my Softail.

So with the Hella horns I can use the stock wiring setup and be oki???

i'd like to know too, but I'd imagine using a relay and connecting it to the battery will allow the horn to get the most power and function at its full (loudest) potential.

i used this thread to help install super loud air horns on my tC--
A relay wasn't used for this installation

http://www.scionlife.com/forums/viewtopic.php?t=215521

=]

DUDE THAT LOOKS SWEET

So does the relay come in the horn set?

DO hella horns really need a relay or no? will not using it cause the stock harness to burn or no ? are they plug and play?

a yess or no with out details will help me :)

THanks

im doing the intsail this weekend

^ the answer is it depends. people have posted that they got it working w/o a relay.... but others say that you should use a relay so you dont fry anything on the cars stock wiring harness.

for my hellas, i used a relay. in fact, since i have two sets of hella horns, i used TWO relays. overkill? maybe. but at least if poop hits the fan, i will only burn out a $5 relay and not some hundred dollar+ part on the cars wiring harness.

so the answer is it depends. personally, if i had to do it again, i would still go the relay route. you have less to worry about that way.

They've been holding up well for you?

they have been holding up very well for me. the screws on the horns have some surface rust on them but aside from that, they've been holding up really nicely...

the other day, i was considering getting a louder horn and replacing my current ones.. just for the hell of it... LOL.... i would go for the stiebel nautilius horns....

but i know myself. i'd probably get 4 of them. :-D

any sound clips on the horns ?

so the relay comes with the kit or that's something i gotta buy separate ?

the relay comes with the kit i believe....i juz ordered a kit.
can any1 help me with the relay set up thing...

Nice, very cool. I 2nd a vid or sound clip

i juz got my hella supertone horns today. inbox included relay, 2 horns !! how abt the wires ???