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> Universal Fit Products > Adapters and Wiring Harness >

One set 12V Horn Wiring Harness Relay Kit For Car Truck Grille Mount Blast Tone Horns (Actual Horns not included)

12V Horn Wiring Harness Relay Kit For Car Truck Grille Mount Blast Tone Horns


Price: $12.99

Stock:In Stock

Usually Ships in 24 Hours


Details FAQ/Install


  • 1 set relay harness only (Horns not included!)
  • Cable length: approx: 60 inches
  • Universal for most grille mount electric blast horns
  • Connect up to two horns
  • Made with 18 Gauge wire, high efficient copper wiring
  • Heavy duty, high efficient, heat resistant, never melt
  • See more product details


Horn Relay Harness Kit

Horn Relay Harness Kit

Horn Relay Harness Kit

Horn Relay Harness Kit

Horn Relay Harness Kit

Horn Relay Harness Kit

Horn Relay Harness Kit

Additional Information

Take the trouble out of installing your aftermarket horns with this relay wiring harness. This relay kit will make the installation super easy! This harness gives you the option of using both your existing and your aftermarket horns, while maintaining your factory horn button with one easy setup.

Since most car only has one horn, if you want install an extra pair of horns, it is necessary to use this relay harness kit. This relay harness kit will minimize the modification and make the installation super easy!

For more pictures, please click the "Gallery Picture" Tab above

Warranty Terms and Conditions

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Average Customer Review:

5 of 5
Total Reviews: 14 Write a review.

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  0 of 0 people found this product review helpful:
Perfect horn relay harness June 3, 2018

Reviewer: michael

This worked great for installing my HELLA horn kit on my Honda del sol. I did have to do a little bit of extending due to the way I routed it into the cab but other than that it was perfect! Thank you!

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  0 of 0 people found this product review helpful:
2011 Mazda MX-5 Miata Hella Supertones May 25, 2018

Reviewer: Gene Jone

I replaced the Nautilus horn with this Hella Supertones and WOW! so much better.  The12V horn wiring harness makes the install so much easier.  Here are some tips to for a Mazda MX-5 Miata install with this combo:

1. There are mounting holes already in the car (Thank you Mazda!) you just need bolts. So pickup a pair of M6 - 1.00 x 16, and two M6 lock washers. You can also use M6 1.00 x 20 bolts. BTW, I also used some thread locker to keep it in there.
2. Take off the front bumper. Yes, it makes it so much easier.
3. The stock horn connector is a spade type and the kit is cylindrical, so you'll need to figure that out by changing one of them.  I just change mine to new spade type connectors.
4. Run all the cable as per the directions in the kit and zip tie it to keep it nice and tidy.

I hope this helps, LOVE my hella horns now.
Dumb drivers and pedestrians on their phones too busy to watch where they are going to do not like how loud my horn is...LOL.

Oh, some have use the stock horn connection, but I figured, since I'm already in there, why not do it right the FIRST time and not have to go back in and fix it.

Here's the link to the Horn I installed:
<a data-hook="product-link-linked" class="a-link-normal" href="/HELLA-003399801-Supertone-12V-High-Tone-Low-Tone-Twin-Horn-Kit/dp/B000CRZXPI/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">HELLA 003399801 Supertone 12V High Tone/Low Tone Twin Horn Kit</a>

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  0 of 0 people found this product review helpful:
decent 12V horn harness March 14, 2018

Reviewer: KerbyG

Purchased to provide 12v power to front/back cameras for double din install, and while it was exactly what i needed, the horn wiring harness didn't work out of the box because the pin placement on the female connector was incorrect, and the ground wires weren't connecting to anything. Once that issue was addressed, everything worked flawlessly, so one star off because of the hassle

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  1 of 1 people found this product review helpful:
Solid horn harness. Universal fit February 20, 2018

Reviewer: A. Nonymous

This horn wiring harness is great for a universal application. If you have the slightest knowledge of vehicle electrics you should be able to figure it out. If the lead is too short, extend it. Used it to wire auxiliary horns. Turned out great. Don?€?t expect this to work directly with whatever car you?€?re working on, it?€?s not made specifically for any one vehicle.

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  1 of 1 people found this product review helpful:
Nice horn wiring harness February 17, 2018

Reviewer: Clemuel.

A very useful and versatile horn wiring set.  While the Chinese stuff may be of dubious quality, it's all you need for a horn or spotlight or any wiring accessory that requires a relay control.  I used it to install an electronic horn where my switch triggered a connection to ground.  This saved me a bunch compared to buying the wiring, guard and relay at a parts store.  Here's what I got:  A typical Chinese plug-in type SPST 12 volt relay and its socket with no mounting lug.  Corrugated wire protector (4-1/2 feet) with two 18 ga wires in it, Four feet of single conductor 18 ga battery lead in a loom. Two feet of 18ga battery ground lead in a plastic loom, Two sets of 18ga leads for horn attachments, one that's two feet long and one that's 4 feet long.  A foot of two 18ga wires in a loom for attaching to your signal supply.

With these parts at this price, you should be able to work out your application.  There's a link on the seller's Web site that explains the connections if that's a help you need.  This horn wiring harness may not be "plug and play" for many applications but all the stuff is here that you need except perhaps for additional terminals and extra 18 ga stranded wire if these don't fit your application.  You really should have some knowledge of what you are doing if you are hoping to make this work.  Happy wiring!

I took away one star for the Chinese relay which anyone knows may or may not work a week from today but can be replaced with a new plugged in one for a few bucks if it fails.

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