The 1968 Chevelle was a classic muscle car that has stayed popular through the years. One common issue with the 1968 Chevelle is the horn relay wiring. This article will guide you through the wiring diagram, as well as common FAQ’s regarding the wiring of the horn relay in your 1968 Chevelle.
Wiring Diagram
The wiring diagram for the 1968 Chevelle horn relay is quite simple. The horn relay is located in the engine bay, on the driver’s side fender. The wiring diagram consists of four wires. The first wire is a black wire, which connects to the negative (-) battery terminal. The second wire is a yellow wire, which connects to the horn button on the steering wheel. The third wire is a green wire, which connects to the horn. The fourth wire is a dark blue wire, which connects to the ignition switch.
It’s important to note that the horn relay only works when the vehicle is running, and the ignition switch is in the “On” position.
Black Wire
The black wire connects to the negative (-) battery terminal. This wire provides the ground for the horn relay. Without the ground, the horn relay will not work. Make sure this wire is securely connected to the battery terminal.
Yellow Wire
The yellow wire connects to the horn button on the steering wheel. When you press the horn button, it sends a signal to the horn relay to activate the horn. Make sure this wire is securely connected to the horn button.
Green Wire
The green wire connects to the horn itself. This wire provides power to the horn when the horn relay is activated. Make sure this wire is securely connected to the horn.
Dark Blue Wire
The dark blue wire connects to the ignition switch. This wire tells the horn relay when the vehicle is running and the ignition switch is in the “On” position. Make sure this wire is securely connected to the ignition switch.
FAQ
How do I know if my horn relay is working?
If the horn relay is working properly, you should hear the horn when you press the horn button on the steering wheel. If you do not hear a sound, try checking the wiring connections to make sure they are secure. If the wiring is secure, you may need to replace the horn relay.
How do I replace the horn relay?
To replace the horn relay, locate it in the engine bay on the driver’s side fender. It is a small rectangular box with four wires coming out of it. To remove the horn relay, simply unplug the wiring connections and unscrew it from the fender. To install the new horn relay, screw it into place and plug in the wiring connections.
What if my horn relay keeps blowing fuses?
If your horn relay keeps blowing fuses, it could be a sign of a wiring issue. Check the wiring connections to make sure they are secure and not corroded. If the wiring connections are fine, you may need to replace the horn relay with a higher amperage one.
Can I install an aftermarket horn on my 1968 Chevelle?
Yes, you can install an aftermarket horn on your 1968 Chevelle. To do so, simply connect the aftermarket horn to the green wire on the horn relay. Make sure the horn is securely mounted and wired correctly to avoid any issues.
What if my horn sounds weak?
If your horn sounds weak, it could be a sign of a faulty horn relay, a blown fuse, or a weak horn. Start by checking the horn relay and the fuse. If those are fine, test the horn itself to see if it needs to be replaced.
Conclusion
Wiring the horn relay in your 1968 Chevelle is a straightforward process. Make sure to follow the wiring diagram and check the connections to ensure everything is wired correctly. If you have any issues, refer to the FAQ section. With a little bit of effort, you should have a working horn in no time.
