14 DONKIN RD, ARMSTRONG, WASHINGTON, NE37 1PF | 0191 338 5383

0191 338 5383

Craggs Automotive Repair & Service
Craggs Automotive Repair & Service
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Electrical Repairs - what can we do?

Complete vehicle electrical diagnostics – identify shorts, parasitic drains and faulty wiring.

Did you know? Hidden wiring faults can drain a battery overnight. Early diagnostics save time and prevent costly call-outs. 

Battery testing, replacement & coding – check cold-cranking amps, fit new batteries...

Value add: We test cold-cranking amps and code new batteries to your ECU so your charging system recognises them correctly. .

Alternator testing & replacement – fix charging issues and dashboard battery warnings.

Tip: A weak alternator can shorten battery life and leave you stranded. Testing output ensures reliable charging. 

Fuse & relay diagnostics and replacement – track and replace blown fuses or faulty relays.

Value add: Tracking down a single faulty fuse or relay often restores power without expensive component changes. 

Wiring loom inspection & repairs – locate chafed, corroded or broken wires.

Tip: Corrosion or rodent damage in the wiring loom can cause intermittent faults that only appear in damp weather. 

All lighting repairs – replace bulbs and repair circuits.

Did you know? A single failed bulb or wiring fault can lead to an M.O.T failure - routine checks prevent surprises.

Power window, door-lock & mirror repairs – restore convenience features and security.

Value add: We repair switches, motors and wiring so convenience features and security systems work like new. 

Heater blower & climate control electrical repairs – fan, temperature sensor or resistor faults.

Tip: A faulty resistor or sensor can stop cabin fans from blowing hot air - diagnosis avoids unnecessary heater replacements. 

Electric handbrake & parking brake servicing – repair sticking or non-releasing electronic brakes.

Value add: Correct calibration stops the brakes sticking or failing, a common cause of M.O.T advisories or failures.

ABS, airbag and safety system repairs – sensor replacements and wiring fixes for critical systems.

Tip: A single broken sensor wire can disable ABS or airbags - our diagnostics locate the fault fast. 

Towbar wiring installation & trailer electrics – test 7-pin/13-pin sockets for towing.

Value add: We test 7-pin or 13-pin sockets, ensuring trailer lights work perfectly and comply with UK towing laws. 

Accessory and retrofit installations – dash cams, parking sensors, reversing cameras...

Tip: Dash cams, parking sensors and reversing cameras are wired neatly into your vehicle’s power supply for a factory-finish look. 

Central locking and keyless entry repairs – correct door-module faults and key fob signal issues.

Did you know? A weak key-fob signal is often caused by a failing door control module - not always the battery inside the fob. 

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Got a Question About Electrical Repairs?

Please reach us at craggsrecovery@gmail.com or give us a call 01913385383 if you cannot find an answer to your question. 

Dim or flickering lights, warning lights that stay on, slow cranking, flat batteries, or power windows and locks that stop working.


Causes include a weak battery, failing alternator, faulty starter motor, or a parasitic drain such as a hidden wiring fault or glovebox light that won’t turn off.


Typically 3–5 years in UK conditions. Extreme temperatures, short trips and heavy electrical loads can shorten lifespan. 


Yes. A weak alternator can undercharge or overcharge, both of which shorten battery life and may leave you stranded.


This can indicate low alternator output, a loose belt, corroded wiring or a failing battery.


Not always. Many issues come from a failed switch, relay, or simple wiring break that can be repaired without major cost.


Yes. We diagnose and fix problems with sensors, wiring and cluster electronics, and reset warning lights once the fault is resolved. 


Yes. Faulty lights, non-working brake lamps, or persistent warning lights can all result in an M.O.T fail. 


Simple jobs like fuse or bulb replacement may take minutes. Complex wiring or charging-system repairs can take a few hours, depending on parts availability or complexity of the fault.


This does depend on the make/model of the car. If the vehicle will be unused for more than a couple of weeks, disconnecting the battery or using a maintenance charger helps prevent discharge but again, for certain makes/models. For example, if you were to disconnect the battery on certain BMWs, this can lead to module failure. 


Regular battery tests, keeping terminals clean, checking lights and fuses, and addressing warning lights promptly are the best preventative steps.


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