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FAQs

Match coverage to the vehicles you service. OBD-II covers all post-2001 petrol and post-2004 diesel cars and light commercials in the EU/UK — basic generic codes only. For manufacturer-specific live data, bi-directional control, and module programming, you need either a manufacturer-specific tool or a multi-make professional scanner with the relevant protocol packs (KWP2000, CAN, UDS, etc.). For HGVs, plant, and agricultural equipment, J1939 CAN coverage is essential. The protocol coverage is listed on every scan-tool product page.

Digital multimeters are the workshop default — easier to read, more accurate, and with auto-ranging on most modern units. Look for True RMS measurement on units used for diagnostic work involving variable-frequency signals (ABS sensors, MAF outputs, alternator ripple). Analogue multimeters are still useful for showing rate-of-change in voltage and current — some technicians prefer them for tracking sensor outputs. For most diagnostic work today, a quality True RMS digital multimeter is the right choice.

A basic test light shows whether voltage is present at a circuit point — used for power and earth checks. A logic probe distinguishes between high-voltage, low-voltage, and signal-pulse states — essential for testing modern electronic circuits where a steady ground reading on a basic test light might actually be a high-frequency PWM (pulse-width-modulated) signal. For modern vehicles with extensive PWM control, a logic probe or oscilloscope is needed alongside a basic test light.

Yes — CAN-bus diagnostic work requires either a CAN-capable scan tool or an oscilloscope with appropriate probes. Standard multimeters can show whether the CAN-H/CAN-L wires have voltage, but cannot decode the data on the bus. Scan tools that support CAN-protocol modules read live data from individual modules; oscilloscopes show the actual signal waveform for diagnosing wiring faults. For modern vehicle diagnostic work, a CAN-capable scan tool is essential.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and 'Check where we deliver' confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

Electrical Repairs

Electrical Repairs covers the workshop tools used to diagnose, test, and service vehicle and plant electrical systems — multimeters, circuit testers, relay testers, compression testers, fault-code readers, wiring tools, terminals and connectors, and the diagnostic equipment used by automotive electricians, plant fitters, and fleet workshops to track down electrical and electronic faults across modern equipment. Within Electrical Repairs you will find Compression Testers (cylinder-pressure test kits used in fault diagnosis on petrol and diesel engines), Vehicle Diagnostic and Test Equipment (multimeters, fault-code scanners, oscilloscopes, dwell meters, and live-data scan tools), Wiring & Terminal Tools (crimpers, strippers, terminal-extraction kits, and the consumable terminals and connectors used in repair work), Battery Testing tools, and the specialist test equipment used on alternators, starters, and ECUs. Parts For Machines supplies trade-grade electrical repair tools for workshop and field use. The category covers both general electrical diagnostic kit (any-vehicle multimeters, basic test lights) and the specialist tools used in fault-finding on modern electronic engines, EBS systems, and CAN-bus networks. Product pages list the application (which systems and protocols the tool supports — basic 12V/24V testing, OBD-II, CAN, KWP2000, manufacturer-specific protocols), measurement ranges (voltage, current, resistance, dwell, RPM), accuracy ratings, display type (analogue dial, digital LCD, OLED graphic), and any included accessories (test leads, adapter cables, software, carrying case). Buyers in this section typically know the specific diagnostic operation they're working on — engine compression test, electrical fault find, battery system test, ECU fault-code read. Filter by the operation needed and the protocol coverage required to narrow down quickly. Trade pricing on multi-tool and workshop fit-out orders is available; contact the team via WhatsApp 07754288583.
FAQs

Match coverage to the vehicles you service. OBD-II covers all post-2001 petrol and post-2004 diesel cars and light commercials in the EU/UK — basic generic codes only. For manufacturer-specific live data, bi-directional control, and module programming, you need either a manufacturer-specific tool or a multi-make professional scanner with the relevant protocol packs (KWP2000, CAN, UDS, etc.). For HGVs, plant, and agricultural equipment, J1939 CAN coverage is essential. The protocol coverage is listed on every scan-tool product page.

Digital multimeters are the workshop default — easier to read, more accurate, and with auto-ranging on most modern units. Look for True RMS measurement on units used for diagnostic work involving variable-frequency signals (ABS sensors, MAF outputs, alternator ripple). Analogue multimeters are still useful for showing rate-of-change in voltage and current — some technicians prefer them for tracking sensor outputs. For most diagnostic work today, a quality True RMS digital multimeter is the right choice.

A basic test light shows whether voltage is present at a circuit point — used for power and earth checks. A logic probe distinguishes between high-voltage, low-voltage, and signal-pulse states — essential for testing modern electronic circuits where a steady ground reading on a basic test light might actually be a high-frequency PWM (pulse-width-modulated) signal. For modern vehicles with extensive PWM control, a logic probe or oscilloscope is needed alongside a basic test light.

Yes — CAN-bus diagnostic work requires either a CAN-capable scan tool or an oscilloscope with appropriate probes. Standard multimeters can show whether the CAN-H/CAN-L wires have voltage, but cannot decode the data on the bus. Scan tools that support CAN-protocol modules read live data from individual modules; oscilloscopes show the actual signal waveform for diagnosing wiring faults. For modern vehicle diagnostic work, a CAN-capable scan tool is essential.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and 'Check where we deliver' confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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