Male-To-Female Multicolor Jumper Wires

What is jumper wire? Introduction of Jumper wires

What is jumper wire? Introduction of Jumper wires 

Jumper wires are must-have components in DIY electrical projects. But what exactly are they?

Most, if not all, electronics suppliers stock jumper wire in various lengths and assortments. These wires are commonly used with breadboards and other prototyping tools like Arduino.

Jumper wires make changing circuits as simple as possible. They come in a wide array of colors, too, but do they mean anything?

A jumper wire may appear uncomplicated, and it doesn’t get much more basic than other wires or cables. But there are tiny details you need to pay attention to.

What Are Jumper Wires?

Generally, jumpers are tiny metal connectors used to close or open a circuit part. They have two or more connection points, which regulate an electrical circuit board.

Their function is to configure the settings for computer peripherals, like the motherboard. Suppose your motherboard supported intrusion detection. A jumper can be set to enable or disable it.

Jumper wires are electrical wires with connector pins at each end. They are used to connect two points in a circuit without soldering.

You can use jumper wires to modify a circuit or diagnose problems in a circuit. Further, they are best used to bypass a part of the circuit that does not contain a resistor and is suspected to be bad.

This includes a stretch of wire or a switch. Suppose all the fuses are good and the component is not receiving power; find the circuit switch. Then, bypass the switch with the jumper wire.

How much current (I) and voltage (V) can jumper wires handle?

The I and V rating will depend on the copper or aluminium content present in the wire.

For an Arduino application is no more than 2A and 250V. We also recommend using solid-core wire, ideally 22 American Wire Gauge (AWG).

What Do the Colors Mean?

Though jumper wires come in a variety of colors, the colors don’t actually mean anything. This means that a red jumper wire is technically the same as a black one. But the colors can be used to your advantage in order to differentiate between types of connections, such as ground or power.

Types of Jumper Wires

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Jumper wires come in three versions:

  • Male-to-male jumper
  • Male-to-female jumper
  • Female-to-female jumper

And two types of head shapes: square head and round head.

The difference between each is in the endpoint of the wire. Male ends have a pin protruding and can plug into things, while female ends do not but are also used for plugging.

Moreover, a male connector is referred to as a plug and has a solid pin for centre conduction. Meanwhile, a female connector is referred to as a jack and has a centre conductor with a hole in it to accept the male pin.

Male-to-male jumper wires are the most common and what you will likely use most often. For instance, when connecting two ports on a breadboard, a male-to-male wire is what you will need.

How to Use Jumper Wires

Jumper wires are great for modifying a circuit or diagnosing problems in a circuit. The following steps show you how to use these wires in different applications safely.

Step 1

Your first step is to follow electrical safety precautions. Be cautious, especially when dealing with high-voltage circuits. But even with low-voltage circuits, you still need to be attentive.

Step 2

Know the suitable type of connector for the jumper wire. In some cases, you can use the bare wire ends to connect two circuit points. This is recommended if you have steady hands.

But to be safe, particularly if it is your first time, use alligator clips. Or soldering or some other type of connection for the jumper wire.

Step 3

Use the jumper wire to bypass part of the circuit or establish a connection between two points. This helps determine if a part of the circuit is faulty or broken.

Step 4

Connect the jumper wire to a voltmeter or ammeter for circuit property measurements. This allows you to get numbers between or across two points.

Step 5

Choose the right type of jumper wire if you are making a permanent modification to a circuit. The gauge and type of insulation are also essential considerations.

Step 6

Test circuit modifications with a temporary jumper wire before making a permanent connection. You can do this with solder.

Check the performance of the circuit with the temporary connection. This is to ensure that it works as you expect.


Jumper wires, often overlooked heroes in electronics, play a fundamental role in enabling seamless connections within circuits. As conductive bridges, they facilitate the flow of signals, empowering the intricate dance of electrons. In retrospect, understanding the significance of jumper wires unveils their indispensable nature in DIY electrical projects. From simplifying circuit modifications to configuring settings in computer peripherals, these tiny metal connectors form the backbone of countless electronic endeavors. Their versatility extends beyond the boundaries of conventional wiring, making them a linchpin in the realm of electronics. 

For Diy enthusiasts, mastering the art of jumper wire applications opens doors to a world of creative possibilities. These enthusiasts, armed with the knowledge of jumper wire basics, gain the ability to mold and modify circuits with precision. It’s the mastery of this seemingly simple component that empowers individuals to transform electronic concepts into tangible prototypes. Aspiring electronics hobbyists can leverage the unique functionalities of male-to-male, male-to-female, and female-to-female jumper wires, understanding their differences and applications. The journey from novice to adept DIYer involves exploring head shapes, such as square vs. round endpoints, and choosing the right jumper wire for specific tasks. 

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