How do you hook up a relay to a horn?
How to Wire a Horn Relay
- Locate the original horn and disconnect the wire to it.
- Connect this wire to the relay at terminal 85 if 12 volts was present in the wire.
- Connect the horn wire to terminal 86 and terminal 85 to terminal 30.
- Mount the new horn and relay in a convenient location under the hood.
How do you wire a 12v relay to a horn?
How To Wire A Horn Relay Step-by-step
- Step 1: Locate and disconnect the original horn wire. Locate the original horn and disconnect the wire.
- Step 2: Connect the wire to the relay.
- Step 3: Connect the horn wire.
- Step 4: Mount the horn and the relay.
- Step 5: Connect the solderless ring terminal.
- FAQs.
How do you test a Chevy horn relay?
Tool-Free Test
- Determine where the relay box is mounted by referring to the owner’s manual. Locate the horn relay inside the relay box.
- Pull the horn relay from the relay box. In the same relay box, find a relay of equal size.
- Turn the car’s ignition to the “On” position. Attempt to honk the horn.
Does a horn 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.
How do you know if horn relay is bad?
The horn relay controls the delivery of power to the horn itself. A bad relay will prevent the horn from working properly. If the relay is bad, you might hear a clicking sound coming from the relay when you try to honk the horn.
What is horn relay?
The horn relay switches a large current to the horns at a signal from the low-current horn button in the steering wheel. It’s a simple, inexpensive single-pole single-throw (SPST) relay, packaged in a small metal or plastic box with five spade-lug connectors.
What wire do I use for car horn?
Use 14-gauge primary wire.