i got a 12v horn off ebay
http://cgi.ebay.com/ebaymotors/ws/eB...&category=6755

im having a nightmare installing it, the instructions are horrible, my front bumper is off right now and im sitting here waiting for someone to respond, any help from anyone? 2005 xb is what i drive

 

That is a Hella horn, right? The relay needs to be grounded, horn signal in, horn signal out, and 12v fused from the battery.

Google up 'Relay' and you should get the propper pinouts for the relay... or the directions should have it... if you know what you are looking at.

GL!

 

OK, lets see what you got. Without looking I am guessing that the stock horn is a two wire positive and negative, when you press the momentary on the steering wheel the circuit is completed and the horn sounds. That's just a guess I haven't looked at my tC.

On the air horn it says it has a prewired compressor and comes with a relay. The relay is to reduce the current through the switch, and the relay probably passes current to the compressor wich makes the horn sound.

Barring seeing the instructions given I am guessing that you hook up the positive for the stock horn to the signal input on the relay and connect the positive side of the relay to the battery. Connect the switched terminal to the positive side of the air horn and there should also be a ground on the relay which can be connected to the chassis. Ground the horn and you are done.

Confused? Any more info will help hone these instructions to your application. WHat does the relay look like? How many connectors? Any diagrams? How many connections on the air horn?

 

can u please post a audio clip when you got that installed? i wanna hear it...

 

the stock horn is actually 2 horns with 1 wire going into each, this is really starting to ____ me off.i cant get it to work.

 

CRxB's horn tutorial should help you out. It's for his tC, but wiring the relay should be the same...

https://www.scionlife.com/forums/viewtopic.php?t=50465

One of the many informative threads that make up the Tech/FAQ section! :D www.scionlife.com/tech

Also, when i was fiddling around with FIAMM horns, I noticed the horns negative is grounded to the chassis. So, the power wire goes to the positive lead and the negative lead goes to the chassis. Does that help?

 

i already saw that, if you even read my post, i have a single horn. with two trumpets on it.

 

moved...

 

its the same principal....
one horn with 5 bells or 10 horns...its the same thing....

the horn will need pos and negative to work...make one constant and switch the other...(thats what the relay is for...)

read the tutorial again and forget about the number of horns and bell you have...

 

ok i got it to work, turns out my inline fuse as a super dinky one and it literally melted inside, so i got some heavy duty ones and everything sounds good. it sounds like a mini train

 

I am sure all of us would love a sound clip if you can get one...

 

http://stebel.it/stebel/index.htm

go to products
then click on the car in the little menu and then go to NAUTILUS SERIES and theres a sound clip you can listen to

 

dang! I want one...maybe 2!

 

so now that you know how it's done, would you consider it to be a difficult install? any tips that might make it easier for those of us thinking of doing the same thing?

 

its not a hard install if you have all the materials. For mine i needed a pack of female wire connectors, and then you need a crimper to get them to stick to the wire good, then i needed an inline fuse, and a few circular grounding connectors to attack the grounds to bolts. From a 1-10 having no idea what im doing when i started i would rate it at a 3. When you realise the wire and connectors to get to project done its kind of a bummer but once you get all the materials you can whip it out in probably 15 mins

 

i want to get the boat or truck horns..yeahh..heck yeah..

 

i've got a horn that makes truckers go 'WTF was that' as they swerve and hit the ditch from being scared by it....

 

I got my horn it...where is the stock horn located at? Also, what's the best way to access it so I can swap it out?

 

the stock horns ar located behind the bumpber....
take it off, its easy....search for the how too...

 

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To remove the front bumper you have to also take the grille off. It make sit easier to get the 10mm bolts off. IIRC, there are 10 10mm bolts to remove altogether. Don't forget the ones that connect the front lip to the chassis and fender wheel well liners.