FARBIN Horn Wiring Harness Relay Kit for Car Truck 80a 4pin Spst Normally Open (Relay 4 pin Double Horn Wiring Harness, 12V)

Works great easy to install. Wires were just long enough for my 22 highlander.

I also ordered a pair of their high and low tone horns with this harness. Installation will vary depending on the vehicle you own. Mine was for a 68 Pontiac GTO. I listened to the horns from their ad and liked the sound. They did not disappoint. I wanted that big GM car sound of the 60's. Be prepared to have some additional same gauge wiring and connecters on hand as I had to lengthen the harness for my application. I purchased a horn button from a local auto parts store which came with it's own wiring. Take your time, the instruction diagram is easy to follow and is in color. I'm a happy camper!

The relay harness works for connecting two horns to the original negative switched horn on a 1991 Toyota camper. However, it is set up such that the long lead is to the power from the battery and shorter leads are to the factory horn connector and to the new horns. This didn't work for me, as the factory connector is close to the battery and the actual horns are on the opposite side. I could have modified it but didn't make the effort.The relay has a clear housing and is copper wired.

This harness made installing the dual horns on my motorcycle a breeze. Instructions were easy to follow. Had the horns already mounted and took about an hour to properly tuck wires out of sight. Connections were easy to make. Definitely recommend this to anyone who wants to switch to a dual horn set-up.

It’s nice item and very good quality

Works like a charm, easy to install. horn power and ground leads are very short, so the relay must be mounted within a few inches of the horn. For me that means above the radiator where it will be exposed to rain and dust. Time will tell how well it holds up, but for now it's certainly worth the $10 I paid for it.

Absolutely a HORRIBLE design. Anyone that knows anything about electrical knows 16 gauge (16AWG) stranded cable cannot hold 30A of current. The fact that they have a 30 amp fuse is absolutely ridiculous and can cause a fire. The fuse should be at the absolute max 15A and should honestly be closer to a 10A fuse. So your cable would start to melt before your fuse pops which is a major fire concern. The wire should be swapped for 12 gauge or the fuse should be swapped to a 15A rating. The power cable is also way too short.

Even if your horns have a relay already, this harness is important to make sure they get the full continuity and power from the battery. If you just throw some new high power horns on there all raw dog you won't get much more sound than the factory. Using this harness you get a heavier gauge, higher amperage power wire fused off the battery to get that big loud gtfo my way that you are looking for.