Technical Air Horns twin tone - FITTING???

[MikeyD]

im lookin to fit these to my sei, but before i buy, can anyone tell me how hard (or easy) they are to fit? I see they come with a small relay box (i think) and various other attachments (plastic tubing). I fitted them YEARS ago to an old Fiesta (hick) and it seemed easy back then. Bit more shakey these daze !!
Thanx

 

[rallycinq]

Right,

Rule 1. DO NOT, under any circumstances, forget to fit the relay.

Rule 2. Wire the power feed to the relay to the battery positive terminal, using an approprite fuse. The fuse to be placed as close to the battery as possible.

Rule 3.Use a short piece of the correct gauge of wire to connect the earth from the relay to the relay mounting screw.

Use the existing horn wiring as the switching signal for the relay.

Cheers

D

 

[fingers99]

I'd just add

Use the existing horn wiring as the switching signal for the relay.

Or you can even piggy back the relay connections off the existing horn connections, leaving the old horn attached, so you've a back up if the relay fails.

Don't mount the trumpets facing downwards as the air blast can create terminal understeer

 

[Martyn.P]

I was led to belive that air horns can only be used as a replacement for a normal horn on cars regestered before August 1973.

Have I been misinformed???

 

[fingers99]

I've not heard that oner, although there is some stuff about 2 tone horns......

Anyroadup, do what I suggest and you're not replacing, eh

 

[rallycinq]

Two tone horns are perfectly legal if they both sound at the same time. What is illegal, is horns that play a tune, even if that tune is only two notes. Most air horn kits have a single output compressor and a 'Y' peice for the pipes leading to the horns, and are tuned to be as discordant as possible, stands out more.

Cheers

D

 

[Luke M]

i looked at these the other day. the twin tone or triple tones are legal on any road car. the musical ones are only for off road use or for cars registered before 1973.

if you want musical ones just fit them on a seperate switch in your dash.

 

[Giggz]

ive got a standard twin air horn and they wired that up for my car to get through the mot as my normal 1 dont

 

[Luke M]

so you saying a twin horn passed the MOT when a standard disc horn wouldnt? why was that?

 

[Giggz]

my normal horn wasnt wired up and it was quicker to wire the air horn up as it just needed plugged in.