DIY - Hella Supertone horns installation on FR-S

[636]

Can I get a reply? Do I need to buy two fuses to wire in between the Horn and the Relay or no? Thanks!

[xjohnx]

Approximately how long did it take you?

[wbradley]

Originally Posted by 636

So wait, do I need to buy two fuses? Or does this car have them stock.

I think somebody posted on the first page that all the fuses and wiring are included along with a relay that won't be needed in this vehicle.

[DarkSunrise]

These cars are so low, SUV drivers have a hard time picking them up in their blindspots. Almost had an SUV run me off the road this morning. The wimpy stock horn is awful. Going to see about getting one of these installed.

[mezdup]

Originally Posted by xjohnx

Approximately how long did it take you?

@driver01: +1

[cobrabyte]

Took me about 2 hours but I took my time and planned all the wire runs. Didn't want a half-ass install and I certainly didn't want to have to fix a shoddy install in a couple years.

[OrbitalEllipses]

Any reason not to keep the stock horns?

[mangostick]

Just put mine in, had em left over from my WRX so I figured what the hell. I used a relay. I read the thread but for some reason I have this apprehension about cutting oem wiring. If I dont have to, I dont.. so.. I didn't. Used the factory low tone feed to fire the relay and other than grounding the relay itself and running power from battery to relay the install was very similar to the one above. pics shortly.. right now its 2 am and I'm shot.

[Skurj]

Any chance the hella's would fit where the stock horns were?

[mangostick]

Here's how I did mine. Yes, the horns paired up will fit in the factory grill location or you can split them up. Since they're designed to work together though and a little higher pitched than factory I wouldn't recommend hiding the low tone behind the bumper like done from the factory. Might give a undesired muffling effect.

Relays are pretty easy to wire up and only require 4 connections. One for trigger (factory horn wire) one to ground the relay itself, one is power from the battery and the other is the lead that will power the horns. Deeper descriptions of relaying wiring can be found on www.the12volt.com .

Granted, it wasn't NEEDED for the FRS but since I already had it ready to go and it allowed me to not cut any wiring (leaving ability to go back to factory later if need be) I chose to go this route. I also used a relay socket from parts express ( www.partsexpress.com ) that makes it easier to wire and if the relay needs replacement later its as simple as removing the old and plugging in a new.

Time wise, took me about a hour n half of actual work taking my sweet old time. Most of that was removing the bumper, the rest was making sure everything was neat and bundled correctly (loose wires make fires). Mounting was pretty simple.. I used the factory high tone horn bracket and grounded to the horns to their mounting point similar to the install detailed above. Here are some pics.







No wires showing, I made sure to run the power wire in tight with the factory harness and keep it under the factory terminal cover.

[Noob4Life]

Really considering these horns but can somebody post a sound clip of them?

[mangostick]

I'll see what I can do.. need to put my bumper back on first :p lol Then find a place where I'm not going to piss anyone off running the horn over and over. These are LOUD. Though, they're higher pitched than the factory horns they are quite a bit louder.

Here's a youtube clip

[ame="http://www.youtube.com/watch?v=3XLULsqTIpA"]Stock RS horn vs. Hella Supertones - YouTube[/ame]

[mit_peid]

Originally Posted by driver01

- One 10mm bolt and nut

Dumb question, but for this 10mm bolt, is the nut 10mm, is the bolt 10mm long, or the diameter of the thread on the bolt 10mm? Seems like if we used a regular yellow (for 10-12 gauge wire) ring, wouldn't the 10mm bolt/nut combo be too big?

I'm preparing to do the hella install today on my FRS.

[mit_peid]

Okay going to go in...