Many vehicles come with two horns - both a low and a high tone horn. Like many I note that the Jeep's horn is incredibly anemic. A search here and the service manual yield the location of a single (low tone) horn behind the driver's side (LHD) headlight.

But the fusebox holds TWO 10 amp fuses (M22 and M23) for a left and a right horn. So my question is - are there two horns or just one? And does anybody have any idea where the harness is for the second horn. If it exists it sounds like an easy way to add another (high tone) horn and make the vehicle sound both better and louder.

Regards, Tim

 

I just put an air horn in my JK and I was confused about which fuse needed to be upgraded. So I pulled one and tested, no fuse. The I put the first one back and pulled the second, still not horn. I then replaced both and the horn worked fine.

I upgraded both fuses from 10A to 25A to be able to handle the high current draw of the air compressor for the horn.

 

i just baught the dual horn set from the local auto parts store, mounted it wherever i found room, ran wire from the original to that, and viola... better horns for about 20 bucks. been like that for over a year, and no issues no complaints, no new fuses.. etc etc.

 

My concern is if the stock wiring can handle the increased current. Manufacturers don't normally over engineer wiring for cost and weight reasons.

Regards, Tim

 

Valid point. I wasn't the first person to put in this particular air horn and the write up that I read indicated that the 10A fuse blew straight away. Horn usage is typically light for me, unless someone sets off my alarm. I suspect that the stock wiring should be able to handle the current to the horn for short durations. If I was going to drive around with the horn constantly blaring then I might be worried.

 

I unplugged my stock horn, made a ''y'' harness that plugged into the original wiring plug and installed 2 Toyota horns, it goes ''Jeep Jeep'' really Loud....

 

I haven't pulled the horn yet. Are you saying the factory harness has two +12V leads in it? (I'm assuming it grounds via the chassis and not through the harness.) That would account for the TWO fuses. Or did you simply split the single +12V lead to two horns? My concern about that is current draw.

Worst case is I'll run a relay, but I'm trying to avoid the clutter.

Regards, Tim

 

there is only 1 horn stock on the JK

if you want to upgrade i recommend keeping the stock and adding a second horn of your choice along with....fuse, relay, button, wiring, horn. a separate circuit all together.

 

A compressor driven-type horn will probably pull enough current to require a wiring and/or fuse upgrade. The round, flat vibration operated type horns that are installed on virtually every Asian import have just about no current draw. I had 4 Honda Accord horns on my YJ, my 2 year (at the time) grandson would stand on the seat and blow the things for 10 minutes at a time, never blew the first fuse.(I live way out in the woods). Tim, I unplugged the factory horn, crimped a spade connecter (male) to 2 wires, plugged this into the factory horn lead and then crimped female blade plugs to the ends of these wires and plugged them up to my replacement horns. Nice and loud, NO issues.....Very simple install.

 

I just installed the (two) Hella Supertones in my 2007 Unlimited, but did not use the relay that came with the horns. Instead, I just spliced two leads off the stock wiring for the second horn and gave ithem a try: they sounded horrible, so I reversed the wiring hoping that I had it reversed, but they still sounded like a cheap doorbell. I'm embarrassed to honk my horn now and will be taking them out tomorrow unless I can do something to imporve their sound. Could it be due to a lack of power? Would wiring them from the battery through the relay improve their sound? I'd rather not do the extra wiring, but will if necessary, because they are unacceptable now. Any ideas?