1157 Socket Wiring Diagram: Everything You Need To Know

Replacing a broken or burnt out bulb on your car can be a hassle, especially if you’re not familiar with how the wiring works. The 1157 socket is a popular type of bulb used in automobiles, but the wiring can be confusing for those who haven’t dealt with it before. This article will explain everything you need to know about the 1157 socket wiring diagram, including how to wire it properly and FAQs about the process.

What Is An 1157 Socket?

The 1157 socket is a type of bulb commonly used in automobiles for brake lights, turn signals, and tail lights. It is a dual-filament bulb, meaning it has two functions: one filament for the tail light and another for the brake and turn signal functions. This allows for the same bulb to perform multiple tasks, making it an efficient option for cars.

How Does The 1157 Socket Work?

The 1157 socket works through a simple system of wiring that allows each function of the bulb to be activated independently. When the headlights are turned on, the tail light filament is activated, and when the brakes are applied or the turn signal is activated, the brake/turn signal filament is activated. This system ensures that the bulb can perform multiple functions without requiring multiple bulbs.

What Are The Benefits Of Using An 1157 Socket?

There are several benefits to using an 1157 socket in your car. Firstly, it allows for a single bulb to perform multiple functions, saving space and reducing the number of bulbs you need to purchase. Secondly, it is a cost-effective option, as you won’t need to purchase multiple bulbs for each function. Finally, it is a straightforward and reliable system, making it a popular choice for automotive lighting.

How To Wire An 1157 Socket?

Wiring an 1157 socket can seem daunting, but it’s a relatively straightforward process once you understand the system. Here’s a step-by-step guide:

Step 1: Gather Your Materials

Before you start wiring, make sure you have all the necessary materials. You will need:

Material Quantity
1157 socket 1
Wire cutters/strippers 1
Electrical tape 1 roll
Wires (red, black, and green) 3

Step 2: Cut The Wires

Cut three lengths of wire, each about six inches long. You can use any color, but it’s useful to use red for the power, black for the ground, and green for the turn signal/brake light.

Step 3: Strip The Wires

Using wire cutters, strip about half an inch of insulation from each end of the wires.

Step 4: Connect The Wires To The Socket

There are three pins on the 1157 socket: one for the tail light, one for the brake/turn signal, and one for ground. Connect the red wire to the tail light pin, the green wire to the brake/turn signal pin, and the black wire to the ground pin. You can do this using wire connectors or by wrapping the wire around the pin and securing it with electrical tape.

Step 5: Test The Bulb

Once you’ve connected the wires to the socket, test the bulb to make sure it’s working properly. Turn on the headlights to ensure the tail light function is working, then apply the brakes or activate the turn signal to ensure the brake/turn signal function is working.

Step 6: Secure The Wiring

Once you’ve confirmed everything is working, use electrical tape to secure the wiring to prevent any loose connections or damage to the wiring.

FAQs About 1157 Socket Wiring Diagram

1. Can I Use Any Colors For The Wires?

Yes, you can use any color wires as long as you keep track of which wire is which. It’s useful to use standard colors (red for power, black for ground, etc.) to make it easier to remember which wire is which.

2. What Happens If I Connect The Wires Incorrectly?

If you connect the wires incorrectly, the bulb may not function properly or may not work at all. Make sure you double-check the wiring before testing the bulb.

3. Can I Use An 1157 Bulb For Both Turn Signals And Brake Lights?

Yes, you can use an 1157 bulb for both turn signals and brake lights. The dual-filament design of the bulb makes it suitable for both functions.

4. Can I Use An 1156 Socket Instead Of An 1157 Socket?

No, you cannot use an 1156 socket instead of an 1157 socket. The two sockets have different pin positions and are not interchangeable.

5. How Do I Know If My Bulb Is 1157?

You can check the owner’s manual for your car or look at the existing bulb in your car to see if it is an 1157 bulb. You can also ask a mechanic or automotive store for assistance.

Now that you know how to wire an 1157 socket, you can confidently replace any burnt-out bulbs in your car. Remember to take your time and double-check your wiring to ensure everything is working properly. Happy driving!