How to Safely Splice Low Voltage Wiring without Proper Connectors


Splicing low voltage wiring is often necessary when installing new devices or making repairs. However, it can be unsafe if not done properly, especially without the right connectors. This article will provide an in-depth guide on how to safely splice low voltage wiring of 12V or 24V systems without proper connectors.

Understanding Low Voltage Wiring

Low voltage refers to electrical systems that operate at less than 50 volts. Common examples are 12V or 24V DC systems found in landscape lighting, automotive applications, RV/boating, alarm systems, etc.

Low voltage wiring is thinner and more flexible compared to standard 120V household wiring. It uses less insulation since the voltage is lower. Common types of low voltage wiring include:

Proper connectors like crimp connectors, wago connectors, or solder are ideal for splicing low voltage wires. But in an emergency, it is possible to splice without connectors safely.

Dangers of Improper Splicing

Splicing without proper connectors is less reliable and can lead to:

So proper precautions must be taken when splicing low voltage wiring without connectors.

Precautions When Splicing without Connectors

Here are some safety precautions to follow:

Following these methods will produce safe and fairly reliable temporary splice joints.

Step-by-Step Process for Splicing Wires

Here is a step-by-step process to safely splice low voltage wires without connectors:

1. Shut Off Power

2. Prepare Wires


: Damaged strands and nicked copper will lead to poor connections.

3. Twist Wires Together

4. Apply Electrical Tape

5. Test Connection

6. Protect Connection

With proper technique, these emergency splices can last surprisingly long. But use connectorized splices as soon as possible.

Example Low Voltage Splice Applications

Splicing low voltage wiring without connectors may be necessary in:

In these cases, use the splicing method above to safely connect and insulate wires for a temporary repair.

Long Term Reliability of Splices

Splicing low voltage wiring without connectors is considered temporary:

Exposed copper and lack of mechanical strength limits life expectancy. Eventually oxidation, vibration, and stress will cause splice failure.

For long term reliability, always use proper connectors like:

So only use splice method above for temporary emergency repairs until proper connectors can be installed.

Safety Tips

Here are some additional electrical safety tips when working with low voltage wiring:


While splicing low voltage wiring without proper connectors is not ideal, it can be done safely. The key is taking precautions like disconnecting power, making solid mechanical joints, insulating with tape, and testing connections. This can provide temporary repairs until proper connectors are installed for reliability. Only trained individuals should attempt electrical repairs.