How many connection terminals are provided in a horn relay?
A 6 way IDC connector takes the two spare wires from the 8 core control cable, and screw terminals are provided for the horn and lighting wiring. The board is manufactured with a number of “break points” that allow the relays to be isolated for use in many applications.
Do motorcycle horns need a relay?
The OEM horn draws somewhere between 1.5-2 amps. I tried the same with the sickspeed horn and the voltage drop was so high that the horn wouldn’t sound. So, yes a relay is definitely needed. #85 is the relay ground terminal.
What relay controls the horn?
You need a horn relay. It serves as the relay that controls power to the vehicles horn. Usually their will be one wire coming into the horn button and to close the circuit the switch grounds that wire. When current is applied to the relay, the horns power circuit is completed, allowing the horn to function and ring.
Why does a 12v horn need a relay?
When the relay is activated, it can transfer the needed amperage to the horn through wiring which is designed to take the load. There is only so much space within a steering wheel and column. In order to run wiring for everything which is controlled there, a relay is the way to go.
How does a horn relay work on a motorcycle?
The separate wiring harness usually includes thicker gauge wire with higher quality connectors and its own fuse. The most common method of connecting the horn relay wiring harness to the bike’s power is directly through the battery, completely bypassing the bike’s wiring harness.
Is there a dual horn relay wiring harness?
For some reason, dual horn relay wiring harness kits are difficult to find lately. The Eastern Beaver dual horn relay harness (review) that I’ve used before is no longer being made, unfortunately. But I found a new source and added one to the BMW C 650 GT scooter.
How do you install eastern Beaver horn relay?
The installation of the Eastern Beaver horn relay wiring harness is relatively straightforward. The trickiest part is determining which type of horn switch is currently installed on the bike, and then digging through the bike’s wiring harness to locate the two wires leading to the horn switch.
What kind of Fuse do I need for Murph horn relay?
Every harness kit worth its salt will come with good quality wiring and connectors, ready to plug directly to the horn terminals. The kits usually come with a fused power lead and sometimes a spare fuse or two and some cable ties to make things nice and neat. The Murph’s Kit came with both a 10 Amp and 15 Amp blade-type fuse; I used the 15A job.