TIESELX Insulated Butt Connectors – Wire Crimp Splice Terminals (Red, Blue & Yellow | 22–10 AWG)

Product Overview

TIESELX Insulated Butt Connectors join two wires end to end to create a secure electrical splice. They provide a cleaner alternative to twisting wires together and covering the joint with tape.

Insert each conductor into the connector barrel, position it against the internal wire stop, and crimp both sides. The tin-plated brass barrel provides reliable conductivity, while the PVC sleeve insulates the finished splice.

The available sizes cover 22–10 AWG and use red, blue, and yellow color coding.

Key Features

• Wire-to-wire splice: Join two conductors end to end.
• 22–10 AWG coverage: Three sizes cover common low-voltage wire gauges.
• Color-coded insulation: Red, blue, and yellow identify the applicable size.
• Tin-plated brass barrel: Provides conductivity and corrosion resistance.
• PVC insulation: Covers the finished connection.
• Flared barrel entry: Makes wire insertion easier, especially with stranded conductors.
• Internal wire stop: Helps position each wire correctly inside the barrel.
• UL listed: The connectors are UL listed.
• Multiple pack sizes: Choose the quantity that fits your project.

Sizes and Color Coding

Choose the connector according to the wire gauge. Avoid using an oversized connector that cannot grip the conductor securely or an undersized connector that cannot accept the wire fully.

How Butt Connectors Work

A butt connector joins two wires inside a single barrel.

Insert the first wire into one side until it reaches the internal stop, then crimp that side. Insert the second wire from the opposite side and crimp again.

This creates a mechanically secure splice without soldering.

Butt connectors work particularly well when you need to repair or extend a low-voltage wiring run.

How to Make a Secure Crimp

1. Disconnect power before starting.
2. Strip approximately 6–7 mm of insulation from each wire.
3. Insert the first conductor until it reaches the internal wire stop.
4. Crimp that side with a suitable crimping tool.
5. Insert the second conductor from the opposite side.
6. Crimp the second side.
7. Give both wires a gentle pull to check the connection.
8. Inspect the finished splice before restoring power.

Use a crimping tool designed for insulated terminals and the applicable wire size.

Applications

These connectors work well for:

• Automotive wiring repairs
• 12V accessory circuits
• Trailer wiring harnesses
• Marine and RV wiring
• Speaker and audio wiring
• Appliance repairs
• Lighting circuits
• Wire extensions
• General low-voltage electrical work
• DIY wiring projects

Standard PVC Insulation

These butt connectors use standard PVC insulation and are not designed to create a waterproof seal.

For marine, outdoor, or other moisture-prone installations, use a waterproof heat-shrink butt connector designed for sealed connections.

Specifications

Frequently Asked Questions

What are butt connectors used for?

Butt connectors join two wires end to end. They are useful for repairing, extending, or replacing sections of low-voltage wiring.

How do I choose the right size?

Match the connector to the wire gauge. Red covers 22–16 AWG, blue covers 16–14 AWG, and yellow covers 12–10 AWG.

Do I need a special crimping tool?

Use a crimping tool designed for insulated terminals and the appropriate wire size. A ratcheting crimper can provide consistent results.

Are these butt connectors waterproof?

No. These connectors use standard PVC insulation. For moisture-prone locations, choose a waterproof heat-shrink style.

Can I use them for automotive wiring?

Yes. They suit many low-voltage automotive repairs, accessories, lighting circuits, and wiring harnesses.