[robhvs]

I'm on an 08 S model.

I got the FIAM air horn. I also bought the relay.

I'm wondering where to hook this sucker up. What I've read so far is I should use the existing horn wiring if possible.

So... hook up the existing horn wiring to the relay placed back under the seat??? Then run wiring to the front for the horn? It says keep it away from heat and moisture.

What did you all do? Relay? No relay?

Thanks,

Rob.

 

[wi_sci]

I don't remember if a relay is required for one horn or not...

I have a dual FIAMM setup and I used the tutorial here: http://www.rattlebars.com/mtz/hornrelay.html

 

[jbswear]

Relays are always the safe way to go, but not always needed. You can mount it anywhere you want.

Yes, stock horn wires go to the relay. Then power from the battery goes to relay, which then sends power to the horn.

 

[robhvs]

Thanks. That's a big help. I'm diggin into it tonight.

 

[robhvs]

Installed the horns last night. I bought a high tone and low tone from FIAM.

1). They ARE NOT loud like a "BIG RIG". They sound like a Buick. Don't be fooled. But they are loud and will get attention. I was just let down thinking I would have an outrageously loud horn and it sounds like a car.

2) They are more expensive online. I picked up a second, identical FIAM horn from NAPA auto parts for $10 or so.

3) Definitely use a relay and the link at the top of this thread to understand what and why.

4) If you have a newer S model, my pics might help you decide where to put them.

PICS:

left side

right side

 

[jbswear]

Yeah, they're loud, but not wake-the-dead loud.

If you want that, do what I did: install a Stebel Nautilus--a dual-tone air horn.