How to Wire a Horn Relay Circuit EASILY in your Car / Truck / Motorcycle / ATV / Dirt Bike

In this video, I explain how to wire a set of horns into any vehicle that you want. This is the way that I like to wire horns because it uses a negative trigger wire. This is beneficial because you don’t need to run any power wire into the interior of the vehicle, just a ground. This makes building this circuit easier and safer.

0:00 How to easily wire horns on a car, truck, atv, snowmobiles, side by sides etc.
0:20 Low tone and high tone horns
0:43 The benefits of ground trigger relay
1:26 List of needed components
2:13 How a 5-pin Bosch style relay is numbered
2:32 Pin 87A - Not used for this circuit
2:43 Pin 30 - 12v power wire from the battery
3:03 Pin 86 - spliced into 12v power wire from the battery
3:12 Pin 85 - Ground wire & negative trigger switch
3:50 Pin 87 - Power output to the horns

Below is a list of Items to make this horn circuit work properly, using the same method that I did.

Items used in this video:
*As an Amazon associate I earn from qualifying purchases.

➡ This is my video on how to wire the LED Turn Signal / Flasher / Blinkers:
➡ This is my video on wiring brake switches:

Tags:
#Hotrod
#Wiring
#WiringRescue
#Automotivewiring

Please Note: This video description contains affiliate links, which means that if you click on one of the product links above, I will receive a small commission. This helps support this channel and allows me to continue to make videos like this. Thank you kindly for your support!

[WiringRescue]

Thank You for watching the Horn Wiring video!

[TerryHunter-ckrs]

Hi, Thank the Lord for this site! The diagrams are a god send. Car electrical wiring has previously been a frightening mystery to me the diagrams make it so easy to understand and illustrate. This is now my go to site for assistance with wiring issues - thanks guys.

[RenegadeNomad]

It’s 1:30AM. I have no idea why I’m awake or what the heck landed me on this video, but here I am.

[starrwarz]

I dont know how often you read comments, but I'm loving your content. Thank you.
I think your style of explanation and wonderful usage of displays is perfect.
I wish you had a "parasitic draw" testing/diagnosing video. Some of the videos out there are scattered and hard to follow.

[DjCarlosSonic]

Love the old school diagram. Do not change a thing. This is the way it should be, hands on real world. Thank you for doing this.

[crimeboss]

Thanks, I just did it on my bike 🏍 and it works 💪🏿 perfectly fine. I love it thanks bro I really appreciate your effort, time, and energy that you put out to make this video . Am from Jamaica 🇯🇲

[phl_knives]

Great video. Super clear explanation and made my install WAY easier. Thank you. I was missing pin 30 splice on my install and racking my brain to figure it out. Horns are working and now a much safer vehicle. I'm finishing at 2am. After almost having a dump truck change lanes without looking and crush me. Horns needed immediately. Thankfully my old Jeep is loud and he heard that but Horns are much better than exhaust 😊

Thanks again. Killer videos as always

[joshthebavarian]

Hi Jeremy! Just wanted to come on and say that this video helped me successfully wire a horn to an old BMW of mine, where the original system went haywire and I wasn’t able to diagnose why. I used your set up to wire the switch on the ground side, and basically bypassed the original wiring, and it worked like a charm! This was holding me up from getting the car to pass state inspection, so thank you! 🙏

[teddiazjr.]

By far the best video for any aftermarket horns

[KidThomsonMediaProductions]

Got an aftermarket horn wired up and working off my steering wheel push now, thank you big man

[MindDezign]

My comment is you need to mention Wire Gauge, fuse size . I have watched horn and turn signal and no mention of these important details.
Besides that THANK YOU !
I way over think these circuits you Reign in my over thinking!

[randallksparks]

Seriously, within the first 3 seconds, I knew this was the video I needed. Thanks.

[kman]

I need a relay. Damn horn just rings it's head off without one. Cheers for the simplified tuition. 👍

[Sunevel]

Sweet ! Grateful to have this tutorial. Working on getting my 65 Galaxie electrical all upgraded 🌟⚙️

[matthewlund]

Thank you for creating this! I was able to add a horn to my ex police dodge charger with your help!

[josephrobinson]

Hi Jeremy. Thx for the video, you should have mentioned why you need to use a Relay, it helps to POWER UP and it sends a more powerful and consistent 12V charge to the horn, without the Relay, the horn will sound like it’s dying or a cow in Heat !!! 👍🏻

[victorilloX]

Dude you make everything so much easier! Thank you!

[stevederosa]

This is one of the best presentations on YouTube. Thanks

[Ed-dero]

So far all your videos are super, you explain everything in a very simple to follow instruction. Thank you for share your knowledge with us.

[davedewey]

Thankyou for a simple diagram and instructions. I now have a set of working horns. Word of advice.... do not buy ready made wiring harnesses from China as they are wrong as i found out the hard way. This way is so much more gratifying.. cheers dude 👍👍🔥