Auto Electrician Hermanus: What a Proper Wiring Repair Looks Like

What an auto electrician in Hermanus actually does

We diagnose and repair the electrical systems that keep a vehicle running: the battery, alternator, starter motor, fuses, wiring looms, sensors and the electronic systems modern cars depend on.

One thing worth knowing locally is that the coast is harder on car electrics than most people expect. Salt air accelerates corrosion on battery terminals, earth points and connectors, so faults that would take years to appear inland show up sooner here.

Five faults we see most often

1. Battery failure

The most common call-out, and the easiest to test properly rather than guess at. If yours is borderline we would rather tell you now than have you stranded on the R43 later.

2. Alternator problems

The alternator keeps the battery charged while the engine runs. When it starts to fail you will often see the battery warning light come on, and fitting a brand-new battery will not fix it. We test the alternator as part of any electrical diagnostic.

3. Starter motor faults

A slow crank, a single click when you turn the key, or needing a jump every morning are the classic symptoms. These can fail suddenly with little warning. We stock parts for most common passenger vehicles and light commercials.

4. Wiring faults and short circuits

Flickering lights, windows that stop working, fuses that keep blowing or accessories cutting in and out usually point at a fault in the loom. Tracking these down takes both diagnostic equipment and patience, which is what the repair below is an example of.

5. Warning light diagnostics

A light on the dash is a starting point, not a diagnosis. We read the codes, then test the circuit the code points at rather than replacing the part the code names.

The complaint: the boot lock was not working properly

The owner brought the car in because the boot lock was not opening and closing correctly. Rather than guessing which part had failed, our Hermanus team inspected the electrical circuit and wiring connected to the boot lock.

The inspection found damaged wiring in the loom. This explained why the lock could not operate reliably and allowed the team to repair the actual fault.

The damaged section was identified before any replacement parts were fitted. This is why electrical testing and a visual inspection matter: they help the technician repair the confirmed fault instead of replacing parts on a guess.

Once a few strands break, the circuit still works most of the time. It just drops out when the wire moves. That’s exactly the kind of intermittent fault that gets misdiagnosed as a bad motor or a dodgy switch.

How the repair was done

There’s a cheap way to fix this and a right way. The cheap way is to twist the broken ends together and wrap the lot in insulation tape. It’ll work for about six months, then the tape unwinds in the heat and you’re back where you started, usually with a short circuit this time.

We cut each damaged wire back to clean copper, well past the chafed section, and joined it with a heat shrink butt connector. Adhesive lined, so when the heat gun hits it the glue melts and seals the joint against moisture. Each wire is done individually and the joins are staggered along the loom so you don’t end up with one fat lump that can’t bend.

After the damaged wires were repaired, the loom was wrapped in automotive fabric harness tape to protect and secure the repaired section.

Once the repair was complete, the boot lock was tested to confirm that it opened and closed correctly.

What else an auto electrician handles

Loom repairs are one slice of it. The bulk of what comes through the door is battery, charging and starting work: a car that won’t start, a battery that keeps going flat, an alternator that isn’t charging properly. Those get load tested and measured rather than guessed at.

After that it’s fault finding on lights, indicators, wipers, window motors, central locking, immobilisers and the wiring behind aftermarket fitments like alarms, trackers and towbar electrics. Badly fitted accessories cause a surprising number of the parasitic drains we chase down.

And then diagnostics. A scan reads every module in the car, not just the engine, which is how you catch an ABS or airbag fault that never got as far as switching a lamp on. If you want the full symptom checklist, our guide on auto electrical warning signs walks through the seven things worth acting on early.