View Full Version : aftermarket steering wheel horn help

05-22-2010, 11:00 AM
Alright, so its a personal steering wheel. Horn doesn't work.

Took apart all the plastic coverings and fallowed a few how to write ups with no luck. The guy who did it before, used a thick copper wire to make contact with the back of the hub. He ran another wire from that copper piece to a wire which he spliced. The wire he spliced is red/blue with brown dots along it. The actual horn wire is red/blue with grey dots.

The srs wiring was removed, and the relay for the horn which is located on the fuse box isn't there anymore. I did find a similar relay (not all the wires match up thought) and it has the red/blue wire with grey dots.

Took a look in the bumper on the right side. The stock horn isn't there. The clip for it is hanging loose. I pulled up the other hatch and plugged into that one. Nothing. Any way that the wiring could be done so it works with the alarm system horn?

I'm going to assume that shon is the best guy for this since he deals with this kind of stuff all the time.

I've fallowed a few write ups online and had no luck.

Anyone got ideas?



05-22-2010, 12:09 PM
Well you'll need a horn.

And a relay.

05-22-2010, 12:27 PM
The horn button itself is there with the steering wheel. The relay...either got rerused for something else (wires don't match the relay in the other hatchback I have) or was yanked out of the car along with the srs harness.

I'd assume shon would be the go to guy for this. I don't need it fix this weekend, but when I go to put the car on the road, it'll have to be adressed

05-22-2010, 12:32 PM
Sorry, got what u meant. Yes ill need a horn

05-22-2010, 12:39 PM
You should use a relay too. Then take it to Shon.

05-22-2010, 02:14 PM
Thanks jza, ill try and round up the parts soon. Worst comes to worst, I yank it from the beater before I take iit off the road

05-25-2010, 02:04 AM
heres the problem. if i do a job like this at work, it will cost you huge $. If the cowboy before you removed the relay, chances are thhere are more issues with your car. this could take maybe 1 hour to fix...but if he messed with other things...
you guys own some beautiful cars, but sometimes ppl mess with the electrical, and its so sad,... sometimes even dangerious. it seems alot of the jdm stuff is nice on the outside, but a disaster under the pannels. the only time you re-wire a circuit is when the car is just a mess. stay with factory wiring..and fix it clean. keep factory relays, and wire colours.
heres how i wire stuff, and build stuff..like someone els will be in the dash..looking to bash my good name!
alot of the guys love to buy the rhd cars...from japan, most of the time they are modded out with the underdash a mess....but it has volk wheels and big turbos.
p.m me and this is something we should do at my shop at my house.. i will need you there to show you why you do things to factory spec..it will take time to make things right and safe

05-25-2010, 06:50 AM
buy an air horn

05-25-2010, 08:30 AM
Air horn won't help me when the asian chick infront of me brakes 100 ft before a red light.

Shon, sent you a pm. Thanks for the info. If I don't pick up the other car, project car is being kept and brought to you for fixing. It doesn't look all that bad under the there, only extras are fog light wires+alarm. Fogs are labelled to :D but ill take ur opinion over mine.

Thanks man

05-26-2010, 09:06 AM
get the SIR, oither EM2 or EP3, both are nice and are well priced on here!!!

ditch the EG's now taht those cars came up

05-26-2010, 01:10 PM
the horn should be run off swtched ground ie the steering wheel button.
find the wire that goes to the steering column for the horn. cut that wire and run it to a relay as your trigger. have it as a 12v output and run that to the horn. ground the other side of the horn. solder, heatshrink and wire loom everything. i dont remember off the top of my head which terminals on the relay you need to connect to but shon can probably tell you.

05-26-2010, 01:18 PM
on the relay you will see numbers labelling each terminal
87 and 85 connect fused constant 12v
86 connect to horn button
30 connect to positive side of horn
use a 15 or 20 amp fuse before the relay and make sure you have a good clean ground for the horn and put a little grease over your connection.