406 Mobile Mechanic
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406 Mobile Mechanic vinyl lettering with 799-0095 on the side of Josh's black car

Auto Electrical Diagnostics in Great Falls, MT

Electrical problems take patience. Josh works through the system methodically — even on complex or modified vehicles — until the fault is found and fixed.

The work

What's Included

  • Battery, starter and charging system testing
  • Tracing shorts, open circuits and parasitic battery drains
  • Wiring and connector repair, including hard-to-reach harnesses
  • Lighting, power accessory and fuse/relay troubleshooting
  • Diagnosis on modified vehicles and multi-battery setups

Symptoms

Signs You Need Electrical Diagnostics

  • No-start or a click when you turn the key
  • Battery keeps dying overnight
  • Dim or flickering lights
  • Accessories or gauges that work some of the time
  • Blown fuses that keep coming back

Mobile advantage

Why Get It Done On Site

Josh shows you the problem firsthand, shows up when he says he will, and gives you an honest quote before the work starts.

Military discount available — Malmstrom AFB families welcome.

  • Diagnose a no-start where it sits

    A car that won't start can't drive to a shop anyway.

  • Methodical, not rushed

    Josh traces the circuit step by step and shows you what he found.

  • Complex vehicles welcome

    Conversions, multiple battery systems and tricky wiring are part of the job.

  • Honest, reasonable quotes

    Parts sourced and a labor quote sent right away — no surprises.

Dispatch board

How Electrical Diagnostics Works

  1. Job ticket#406-01

    01

    Call or Text

    Tell us what's going on and where you are — 7 days, 8 AM–9 PM.

  2. Job ticket#406-02

    02

    Fast Quote

    We source parts and send a labor quote right away.

  3. Job ticket#406-03

    03

    We Come to You

    Diagnose on site and show you the exact issue firsthand.

  4. Job ticket#406-04

    04

    Job Done Right

    Repaired the first time, on time.

Communication is key — you'll always know what's happening.

Questions

Electrical Diagnostics FAQs

Why does my battery keep dying?

It could be the battery itself, a charging problem, or something drawing power with the key off. Testing each one on site separates the three.

Can you work on modified or older vehicles?

Yes. Josh has traced electrical faults on complex conversions with multiple battery systems and hard-to-reach wiring.

Do electrical problems take long to find?

Some are quick, some take careful tracing. You'll know what's happening throughout — communication is key.

Google review

“OMG!! This guy is like Magic - he was so calm and really you could see him THINKING things through - like a neurosurgeon!! We have a VERY complicated vehicle - 1988 Volkswagen w/ a Subaru conversion - two battery systems and LOTS of complex (hard to get to) wiring!! He just showed up when he said he was going to and methodically went through the electrical system! Then he FOUND the issue and SOLVED the problem. We are both SO impressed and grateful for skills & calmness. We were a long way from home ...impressive work truck with all the bells & whistles...super clean and super SMART dude!! Thank you Josh...we appreciate you”

MCleary

Google Review

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Need Electrical Diagnostics? Call or text 406-799-0095

Open 7 days, 8 AM–9 PM

Request service

Not an Emergency? Request Service

For non-urgent repairs, inspections, or fleet service, send a quick request and Josh will get back to you. Broken down right now? Call or text 406-799-0095.

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