Author Archive: Del City

Circuit Breakers vs. Fuses: Choosing the Right Circuit Protection for Your Application 

When comparing circuit breaker vs fuse options for a commercial vehicle, marine electrical system, RV power distribution panel, or work truck accessory installation, circuit protection is one of the most critical considerations Overcurrent conditions caused by short circuits, faulty equipment, or excessive loads can quickly damage wiring, components, and connected devices. Fortunately, both circuit breakers […]

Basic 12V Wiring Diagram Components and Symbols

Every wiring diagram—no matter how simple or complex—is built from a few core elements. Understanding these categories makes it much easier to break down and interpret any system. Once you can identify these six elements in a diagram, you can quickly understand how the system operates. Common Electrical Wiring Symbols (With Examples) Power Source (Battery) […]

What are Electrical Wiring Diagrams

Electrical wiring diagrams are the universal language of electrical systems. Whether you’re working on a vehicle, boat, trailer, piece of heavy equipment, or an off-grid setup, wiring diagrams provide a clear and standardized way to understand how everything connects. Instead of relying on lengthy written explanations, these diagrams use simple symbols to represent components like […]

Relay vs. Solenoid: What’s the Difference and When to Use Each

Relays and solenoids both use electromagnetic coils to control electrical flow—but that’s where the similarities end. Each is designed for a distinct job, and choosing the wrong one can lead to performance issues or system failure. A relay is built for precise control of electrical signals, making it ideal for switching lower-current circuits. A solenoid, […]

comparing solid state and mechanical relays in an image side by side

Solid State vs. Mechanical Relays: A Comprehensive Comparison

Relays are fundamental components in electrical systems, allowing a low-power control signal to safely switch higher-power circuits. From automotive wiring and industrial automation to commercial equipment and DIY electronics, relays provide a reliable way to control power without running heavy current through sensitive switches or control modules.  While the end function of most relays is the same—controlling […]

12V Wiring Fundamentals Pt. 2

12V Circuit Protection for Automotive & Trailer Applications  Once your wiring fundamentals are in place from Pt 1, the next step is protecting your system from electrical and mechanical hazards. Proper 12V circuit protection, mechanical safeguards, and thoughtful design are essential to prevent overloads, short circuits, abrasion, moisture damage, and heat-related failures.  This guide covers […]

Wiring fundamentals part 1 image with wires and terminals in the background

12V Wiring Fundamentals Part 1

Automotive, trailer, and specialty vehicle wiring operates in some of the harshest electrical environments. Unlike stationary systems, vehicle wiring is constantly exposed to vibration, temperature extremes, moisture, road spray, chemicals, and abrasion.   Getting the basics right is critical — from selecting the right wire to creating secure terminations and establishing reliable grounds.  In this guide, we cover the fundamental principles every […]

DC Wire Color Codes Across Industries: A Practical Guide

Wire color isn’t cosmetic — it’s a functional visual language that communicates exactly what each conductor is meant to do. Across automotive, trailer, solar, industrial, and equipment-based electrical systems, standardized wire colors improve safety, reduce installation errors, and make long-term maintenance far more efficient. When used consistently, these color conventions help technicians quickly identify circuit […]

Variety of different wire connectors that are blue

Choosing the Correct Wire Terminal For Secure Electrical Connections 

Ensuring dependability, safety, and long-term performance are more important aspects of a secure electrical connection than simply connecting wires. The proper wire terminal keeps circuits stable and avoids risks like shorts, loose connections, or system failures, whether you’re working on automotive, marine, industrial, or do-it-yourself applications.  Seven of the most popular terminal types are broken down below, along […]

Choosing the Right Heat Shrink: Fix Wiring Problems with Ease

Wiring problems can cause expensive downtime, safety risks, and annoying repairs when working with electricity in cars, boats, factories, or homes. Heat shrink tubing isn’t just a nice touch; it fixes problems. Let’s look at some common problems and how the right heat shrink can help. Why use Heat Shrink? Heat shrink tubing is made […]