Are there connections for a horn in the OEM wiring harness?  If not, should I add a second fuse block? 

I looked at one horn kit that doesn't use a relay.  It has good reviews, but every other horn I looked it includes a relay in the circuit so I'm skeptical...

Hi Bob,

Pleased to learn you are now fitting extras to your new quad.

There should be horn on the quad, then again if it is not a road legal quad then they may not have fitted a horn.
Consequently, if it is not a road legal quad there may not be a switch/harness/relay/fuse for the horn. Check the wiring diagram, if there is a switch it will be on the left handlebar next to the engine kill switch. Also check for the /harness/relay/fuse on the wiring diagram. If there is a horn, it will be behind the grill on the right as look at the front of the quad.
Let's assume you have none of the above, fitting a horn/relay/fuse/harness is simple, the switch will be the most challenging. If it was a road legal quad the switch would be incorporated into the electrics on the left handlebar grip. Outside of it being a road legal quad when you purchase your horn ensure it comes complete with switch a relay.
Should you fit a relay........most definitely, a relay carry's the current, not as though a horn uses a lot of current, it prevents the horn switch contacts from burning out, i.e. the relay takes the current load off the switch.
Should you fit an Aux fuse box.................most definitely, piggybacking off any existing circuit on the quad overloads that circuit. It will put all the components and harness in that circuit at risk of an electrical fire due to overloading. As you enjoy your quad you will want to fit more accessories, like for example a light bar, that extra USB port or USB ports that you are missing, so an AUX fuse box is a must, safe, secure and does not overload any existing Electrical circuits. But above all reduces the risk of and electrical fire due to overloading circuits.
So for now I will let you digest this, when you are ready and decide to fit the AUX fuse box I will provide you with more advice and images should you venture down this path? 
In the meantime see the attached PDF it takes you to the horn I have fitted to all my X8's, its an absolute humdinger and frightens the *hit out of mostly everything, it includes a link to Amazon where the horn was purchased from.
 
GMSAHFR

Thanks.

I don't think any of the US models are equipped with a horn, but I'm not sure about that.  Mine definitely did not.  I was hoping CF Moto used the same basic wiring harnesses on models sent to various markets and that there might be some type of connections in place already.  I'll take a look at the fuse/relay box tomorrow.

Unfortunately, I don't have access to a wiring diagram for my 2025 model.  I will likely purchase a service manual at some point.

Thanks again,
Bob

Hi Bob,

It is likely that there is a generic harness i.e. one that fits all for all markets and all models.

However, one has to get into the Chinese mind set of manufacture i.e. "Every pound or dollar saved is a pound or dollar made".

A very different mind set to USA and European vehicle manufacturing processes in the motor industry, yes they too have to find savings but unlike the Chinese, the USA and European mind set to manufacture in Motor sector is a left over from WWII. In that the Jeep and the Sherman tanks were made by many different manufactures but their engines, transmissions etc were all interchangeable, this rule for the enthusiasts refurbishing this kit still applies to this day.

Just published a book on this, spent 15 years in the research as my father in-law was responsible along with 50 other guys for waterproofing experimentation, developing and training all the allies for the D-Day landings on the Normandy beaches.

The Book is on Ebay if it interests you "World War II Waterproofing and Wading in Weymouth"

GMSAHFR


   

[2015 Z Force 800 53/Trail EPS]

Talking about getting into the Chinese mind-set, of late they have not been including a wiring diagram in their service manuals. Rather they have been published separately and only available to the authorized dealers. Over time some have sold or released some .PDFs to the public and get spread around. When one gets here I snag it and store it in my Adobe cloud account where I can...assist in the spreading..so to speak. As yet I don't have one for this machine. Might get lucky in that in 2025 they decide to include one with the manual. In any case a service manual is always a good thing to have on any machine.