At McCallon’s Diesel Services, we understand how critical your truck’s electrical and lighting systems are to daily operations. From powering essential components to ensuring visibility and compliance, even a small issue can lead to costly downtime or safety risks. Serving the St. Louis Metro, St. Charles County, Lincoln County, and Warren County, our certified technicians are here to keep your electrical systems running strong and your lights shining bright.
Electrical System Services
Modern diesel trucks depend on complex electrical systems. Our team has the knowledge and tools to quickly diagnose and repair issues so you can stay on schedule.
- Battery testing & replacement
- Alternator repair & replacement
- Starter motor service
- Wiring diagnostics & repairs
- Fuse & relay troubleshooting
- Power distribution systems
- Electronic control module (ECM) diagnostics
Lighting Services
Lighting isn’t just about visibility—it’s about compliance and safety. We provide complete lighting services for trucks and trailers to keep you road-legal and protected day or night.
- Headlight & taillight repair/replacement
- LED upgrades
- Marker & clearance lights
- Turn signals & hazard lights
- Interior & dashboard lighting
- Trailer wiring & light systems
Why Choose McCallon’s Diesel?
✔ Skilled in heavy-duty truck electrical systems
✔ Fast diagnostics to reduce downtime
✔ Quality parts & repairs you can rely on
✔ Service for single trucks and large fleets
✔ 24/7 emergency roadside assistance available
Schedule Your Electrical & Lighting Service Today
Don’t let electrical problems or faulty lights slow you down. Contact McCallon’s Diesel Services today to book your service and keep your truck safe, reliable, and DOT-compliant.