RUNASO RV Service

Certified RV Service Hamilton Based, Ontario Wide Service

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12V DC system repair

Diagnose and repair RV 12V electrical issues to restore reliable power to critical systems without guesswork or unnecessary part replacement.

Schedule a 12V Electrical System Inspection
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Quick Service​ Overview

Mobile & In-Shop Service

Final Availability may depend on RV size, condition, and access.

  • Hamilton Region (Ancaster, Dundas, Flamborough, Glanbrook, Stoney Creek, Waterdown, Downtown Hamilton, East Hamilton, Mountain)
  • Niagara Region (St. Catharines, Niagara Falls, Welland, Fort Erie, Thorold, Grimsby, Lincoln, Niagara-on-the-Lake, Pelham, Wainfleet, West Lincoln)
  • Halton Region (Burlington, Oakville, Milton, Halton Hills)
  • Peel Region (Brampton, Mississauga, Caledon)
  • Wellington County (Guelph, Fergus, Elora, Centre Wellington, Puslinch)
  • Haldimand County (Caledonia, Cayuga)
  • Brant County (Brantford, Paris)
  • Toronto (Downtown Toronto, North York, Scarborough, Etobicoke, York, East York)

Accurate Electrical Diagnosis

We trace 12V faults using proper testing methods instead of replacing parts blindly.

Restore Critical Systems

Repairs focus on lighting, fans, water pumps, control boards, and safety-related components

RV-Specific Electrical Knowledge

RV 12V systems differ from automotive wiring and require specialized understanding.

Common Problems We Fix

12V DC problems often cause intermittent or confusing failures that are difficult to diagnose without proper tools and experience.

Lights flicker or stop working

Often caused by loose connections, poor grounding, or voltage drop.

Water pump not operating

May result from wiring faults, switch failure, or power delivery issues.

Blown fuses or tripping breakers

Indicates short circuits, overloaded circuits, or failing components.

Control panels or appliances not responding

Low voltage or wiring issues can prevent proper system communication.

Intermittent power loss while driving or parked

Commonly linked to battery connections, converters, or distribution panels.

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Our Solution

RUNASO approaches 12V DC system repair with structured electrical diagnostics. We identify the root cause of power loss, voltage instability, or circuit failure before performing targeted repairs—avoiding unnecessary replacements and repeat issues.

Systematic Fault Tracing

Circuits are tested step-by-step to locate voltage drops, shorts, or connection failures.

Proper Repair Methods

All repairs follow RV electrical standards for safety and long-term reliability.

Verification Under Load

Repaired systems are tested under real operating conditions.

What's Included

12V System Inspection

Inspection of batteries, wiring, fuses, switches, and distribution panels.

Electrical Testing

Voltage, continuity, and load testing to identify faults.

Targeted Repair

Repair or replacement of faulty wiring, connectors, switches, or components.

System Verification

Confirmation that affected systems operate reliably after repair.

How The Service Works

Initial Electrical Assessment

We identify symptoms and inspect the affected systems.

Diagnosis & Approval

Faults are explained and repair options are presented before work begins.

Repair & Testing

Repairs are completed and tested to ensure reliable operation.

Pricing

12V DC system repair pricing is inspection-based. After diagnosing the issue, we provide a clear quote before any repairs are performed. No hidden fees.

Nature of the electrical fault

Circuit accessibility

Time required for diagnosis

Parts required (if any)

Why Choose RUNASO

RV Electrical Expertise

RV electrical systems are different from residential or automotive setups.

Root-Cause Repairs

We fix the cause of the problem—not just the symptom.

Safety First

All electrical work prioritizes safety and long-term system reliability.

Testimonials

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Frequently Asked Questions​

Common signs include lights dimming or flickering, appliances not powering on, control panels resetting, weak fans, or devices working only when plugged into shore power.
The 12V system powers interior lights, water pump, furnace controls, refrigerator controls, fans, slide-out controls, control boards, and many safety systems.
This often indicates battery issues, poor connections, blown fuses, a faulty converter, or wiring problems preventing proper battery power distribution.
Yes. A failing converter may not properly charge the batteries or supply stable 12V power, leading to low voltage, system instability, or battery drain.
Common causes include parasitic loads, aging batteries, poor charging, faulty converters, corroded connections, or devices drawing power when not in use.
Diagnostics typically include voltage testing, battery load testing, fuse and breaker inspection, converter output checks, and tracing wiring for resistance or faults.
Yes. Loose or corroded connections increase resistance, causing voltage drops that lead to flickering lights, device failure, and inconsistent system performance.
Minor issues may seem manageable, but unresolved 12V problems can affect safety systems, appliances, and battery health over time.
Yes. Many appliances rely on 12V control power even when running on propane or 120V AC, so failures can cause multiple systems to malfunction.
Most diagnostics are completed within a few hours. Repair time depends on whether the issue involves batteries, wiring, converters, or distribution panels.
Yes. While batteries are part of the system, true 12V repair focuses on charging, distribution, wiring integrity, and component performance—not just battery condition.
Inspection is recommended annually, before long trips, after storage, or whenever electrical behavior becomes inconsistent or unreliable.

Schedule a 12V Electrical System Inspection

Electrical issues in RVs often start small but can quickly disable essential systems if left unresolved.
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