Shocking Facts about Old Factory Wiring
- Buddy Faulk

- Aug 31, 2024
- 2 min read
Updated: Nov 9

If you own a vehicle over 20 years old, you should consider upgrading your wiring harness and other electrical components. This maintenance task is as vital as ensuring the functionality of the engine, transmission, and running gear, and should be prioritized over cosmetic enhancements like chrome accessories.
The electrical system in your vehicle is responsible for managing all functions, including starting, charging, ignition, fuel delivery, lighting, instrumentation, heating, cooling, audio, and accessories. Wiring systems in vehicles manufactured during the 1960s and 1970s were specifically designed to accommodate the components and power options of that time period. The 37 to 55-amp alternator, which was standard in vehicles from the 60s and early 70s, may struggle to support the numerous accessories available with modern technology. The reasons for wiring harness failure are Age, Corrosion, Heat, Vibrations, and Rodents.

Let's not forget about the importance of appearance. I've been to countless car shows where I've seen engine compartments filled with shiny chrome accessories, only to notice a chaotic mix of old and new wires held together with zip ties and covered in electrical tape. This messy presentation can be quite distracting and give off a negative impression of the vehicle and its owner.

Let's face it, a complete vehicle rewiring may sound like a significant upfront investment. However, if it's done right, it can actually bring you many benefits! This overhaul will not only fix all current and future electrical issues at once but also enhance your vehicle's performance, enable you to add new upgrades, and give it a fresh makeover while boosting its resale value. On top of all that, by ensuring that the wiring is modern and safe, you could potentially even lower your insurance premiums. So, consider it as a smart investment for your vehicle's overall health and longevity!



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