A 12 volt reversing relay is a device that allows you to change the direction of current flow in a circuit. It is often used in automotive applications, such as controlling the direction of a motor or actuator. In this article, we will discuss the wiring diagram for a 12 volt reversing relay and how it can be used in your projects.
What is a Reversing Relay?
A reversing relay is a type of relay that is designed to change the direction of current flow in a circuit. It can be used to control the direction of a motor or actuator, and is often used in automotive applications. The reversing relay has two sets of contacts, allowing it to switch between two circuits. When the relay is energized, one set of contacts is closed and the other set is open. When the relay is de-energized, the opposite set of contacts is closed and the other set is open.
Wiring Diagram for a 12 Volt Reversing Relay
The wiring diagram for a 12 volt reversing relay is shown in the table below:
| Terminal | Description | Wire Color |
|---|---|---|
| 87 | Power to Relay | Red or Yellow |
| 85 | Ground | Black or Brown |
| 86 | Coil Positive | Blue or White |
| 30 | Common Contact | Orange or Green |
| 87a | Normally Closed Contact | Gray or Purple |
Terminal 87 is the power input to the relay. This wire should be connected to a 12 volt power source. Terminal 85 is the ground wire and should be connected to the vehicle’s chassis or a grounding point. Terminal 86 is the coil positive wire and should be connected to a switch or other control circuit. Terminal 30 is the common contact and is used to connect the relay to the circuit that is being controlled. Terminal 87a is the normally closed contact and is not used in this wiring diagram.
FAQs
What is the purpose of a reversing relay?
A reversing relay is used to change the direction of current flow in a circuit. It is often used in automotive applications to control the direction of a motor or actuator.
How does a reversing relay work?
A reversing relay has two sets of contacts that can switch between two circuits. When the relay is energized, one set of contacts is closed and the other set is open. When the relay is de-energized, the opposite set of contacts is closed and the other set is open, reversing the direction of current flow.
What are the benefits of using a reversing relay?
The benefits of using a reversing relay include the ability to control the direction of a motor or actuator, which can be useful in a variety of applications. It is also a simple and cost-effective solution for reversing the direction of current flow in a circuit.
Where can I buy a 12 volt reversing relay?
12 volt reversing relays can be purchased at automotive supply stores, electronics retailers, and online. They are available in a variety of ratings and configurations to suit different applications.
Can a reversing relay be used in other applications?
A reversing relay can be used in any application where it is necessary to reverse the direction of current flow in a circuit. It is often used in automotive, industrial, and home automation applications.
