# Other Diagnostic & Electrics

**Category Path**: Automotive Tools > Diagnostic & Electrics > Other Diagnostic & Electrics

Shop automotive diagnostic and electrical tools at MyToolShed. Browse circuit testers, smoke machines, relay testers from Sealey & Draper. Fast UK delivery.

About Other Diagnostic & Electrics Modern automotive diagnostics demand more than basic code readers and multimeters. MyToolShed.co.uk's Other Diagnostic & Electrics category provides specialist testing equipment for automotive technicians, mobile mechanics, and experienced DIY enthusiasts tackling complex electrical and fuel system faults. From glow plug testers and injector diagnostics to automotive smoke machines and relay testers, these professional tools enable accurate fault-finding that standard equipment simply cannot achieve. This comprehensive range includes trusted brands like Sealey and Draper, offering both entry-level diagnostic equipment for occasional use and professional-grade tools built for demanding workshop environments. Whether you're testing lambda sensors, identifying EVAP system leaks with diagnostic smoke equipment, or troubleshooting towbar socket wiring with dedicated testers, these specialised tools dramatically reduce diagnostic time and improve first-time fix rates across 12V and 24V vehicle systems. Applications Independent garage mechanics diagnosing electrical and fuel system faults Mobile mechanics requiring portable diagnostic equipment for roadside work Auto electricians specialising in complex electrical fault-finding MOT testing stations checking emission control systems and electrical safety Fleet maintenance teams maintaining commercial vehicle fleets Agricultural engineers servicing farm machinery and diesel equipment Vehicle technicians needing brand-agnostic testing tools Classic car restorers testing electrical systems during rebuilds Experienced DIY enthusiasts maintaining their own vehicles to professional standards Choosing The Right Other Diagnostic & Electrics Voltage Compatibility: Match the tool to your vehicle systems—12V for most cars and light commercials, 24V for HGVs, or dual-voltage equipment if you work across different vehicle types. Many test probes offer 6-24V capability for maximum versatility. Specific Diagnostic Requirements: Identify which systems you test most frequently. Glow plug testers are essential for diesel diagnostics, while lambda sensor testers and smoke machines are crucial for emission-related work. Injector testers help diagnose fuel delivery problems that might otherwise require expensive component replacement. Build Quality: Professional workshop use demands robust construction that withstands daily handling, accidental drops, and exposure to automotive fluids. MyToolShed.co.uk stocks Draper Expert and Sealey professional ranges offering superior durability compared to budget alternatives. Ease of Use: Clear LED indicators, intuitive controls, and straightforward operation reduce diagnostic time. Tools with built-in instructions prove particularly valuable when using specialised equipment infrequently. Safety Information Always disconnect the vehicle battery before working on electrical systems unless active testing requires power. Be aware that components like ignition coils and injectors can produce dangerous high voltages even in 12V systems. Wear appropriate eye protection when using smoke machines, and ensure adequate workshop ventilation as diagnostic procedures may involve exhaust gases or fuel vapours. Never probe airbag system wiring without proper training, as inadvertent deployment can cause serious injury. Follow HSE guidance on working with vehicle electrical systems and consult manufacturer technical information before attempting complex diagnostic procedures. Frequently Asked Questions Do I need a smoke machine if I have a code reader? Code readers identify which system has triggered a fault code, but cannot pinpoint physical leaks in EVAP systems, intake manifolds, or vacuum lines. Smoke machines reveal the exact location of leaks that would otherwise take hours to find, making them invaluable for emission-related fault diagnosis. How do I know if a glow plug or the wiring is faulty? A dedicated glow plug tester measures current draw and resistance of individual glow plugs, allowing you to identify failed plugs without removal. This saves considerable labour time and prevents unnecessary component replacement when the fault lies in wiring or control circuits. Can automotive relay testers check relays while installed in the vehicle? Many modern relay testers can test relays in-situ by connecting to the relay socket, checking both coil operation and contact switching without removal. This significantly speeds up diagnosis, particularly when dealing with intermittent faults or testing multiple relays in fuse boxes with limited access.

## Products

- [Sealey Extension Rail Set for HBS97 Beam Setter](https://www.mytoolshed.co.uk//sealey-extension-rail-set-for-hbs97-beam-setter/prod/138837/) - from £123.95
- [Sealey VS869 EVAP Smoke Diagnostic Leak Detector](https://www.mytoolshed.co.uk//sealey-vs869-evap-smoke-diagnostic-leak-detector/prod/580950/) - £659.95
- [Sealey VS870 Automotive Smoke Diagnostic Tool and Leak Detector](https://www.mytoolshed.co.uk//sealey-vs870-automotive-smoke-diagnostic-tool-and-leak-detector/prod/201822/) - £607.95
- [Sealey VS868 Smoke Diagnostic Leak Detector Tool](https://www.mytoolshed.co.uk//sealey-vs868-smoke-diagnostic-leak-detector-tool/prod/580949/) - £425.95
- [Sealey Compact Head Lamp Beam Setter](https://www.mytoolshed.co.uk//sealey-compact-head-lamp-beam-setter/prod/179354/) - £740.95
- [Sealey EVAP Smoke Diagnostic Leak Detector Tool and Oil Kit](https://www.mytoolshed.co.uk//sealey-evap-smoke-diagnostic-leak-detector-tool-and-oil-kit/prod/704128/) - £607.95
- [Sealey TA319 Digital Insulation Tester](https://www.mytoolshed.co.uk//sealey-ta319-digital-insulation-tester/prod/305063/) - £231.95
- [Draper Turbo Automotive Diagnostic Smoke Machine](https://www.mytoolshed.co.uk//draper-turbo-automotive-diagnostic-smoke-machine/prod/507437/) - £379.95
- [Sealey VS868 Leak Detector Smoke Diagnostic Tool & Oil Kit](https://www.mytoolshed.co.uk//sealey-vs868-leak-detector-smoke-diagnostic-tool-oil-kit/prod/704127/) - £425.95
- [Draper Turbo EVAP Automotive Diagnostic Smoke Machine](https://www.mytoolshed.co.uk//draper-turbo-evap-automotive-diagnostic-smoke-machine/prod/507438/) - £569.95
- [Sealey TST22 12v 13 Pin Towing Socket Tester](https://www.mytoolshed.co.uk//sealey-tst22-12v-13-pin-towing-socket-tester/prod/187164/) - £98.95
- [Sealey PPVT Automotive Test Probe](https://www.mytoolshed.co.uk//sealey-ppvt-automotive-test-probe/prod/187024/) - £38.95
- [Sealey VS921 Key Fob Tester](https://www.mytoolshed.co.uk//sealey-vs921-key-fob-tester/prod/128364/) - £34.95
- [Sealey AK4012 Integrated Test Light/Voltmeter](https://www.mytoolshed.co.uk//sealey-ak4012-integrated-test-light-voltmeter/prod/340341/) - £44.95
- [Sealey VS0061 Combustion Leak Detector Kit](https://www.mytoolshed.co.uk//sealey-vs0061-combustion-leak-detector-kit/prod/134147/) - £89.95
- [Sealey Auto Electronics Protection Device](https://www.mytoolshed.co.uk//sealey-auto-electronics-protection-device/prod/27476/) - from £67.95
- [Sealey TA050 Digital Tachometer](https://www.mytoolshed.co.uk//sealey-ta050-digital-tachometer/prod/150705/) - £124.95
- [Sealey Turbo System Leakage Tester for HGVs and LGVs](https://www.mytoolshed.co.uk//sealey-turbo-system-leakage-tester-for-hgvs-and-lgvs/prod/210703/) - £124.95
- [Sealey Automotive Wire and Cable Guide](https://www.mytoolshed.co.uk//sealey-automotive-wire-and-cable-guide/prod/518279/) - £10.95
- [Sealey VS0062 Combustion Leak Detector Kit](https://www.mytoolshed.co.uk//sealey-vs0062-combustion-leak-detector-kit/prod/288621/) - £136.95
- [Sealey VS5272 Automotive Induction Probe](https://www.mytoolshed.co.uk//sealey-vs5272-automotive-induction-probe/prod/437999/) - £0.95
- [Sealey AK4013 Integrated Test Light / Voltmeter](https://www.mytoolshed.co.uk//sealey-ak4013-integrated-test-light-voltmeter/prod/663640/) - £56.95
- [Sealey Combustion Leak Detector Fluid](https://www.mytoolshed.co.uk//sealey-combustion-leak-detector-fluid/prod/134155/) - £30.95
- [Draper RT100 Automotive Relay Tester](https://www.mytoolshed.co.uk//draper-rt100-automotive-relay-tester/prod/355569/) - £57.95
- [Sealey Automotive Leak Detector Smoke Diagnostic Tool](https://www.mytoolshed.co.uk//sealey-automotive-leak-detector-smoke-diagnostic-tool/prod/779654/) - £116.95
- [Sealey TA131 Relay Tester](https://www.mytoolshed.co.uk//sealey-ta131-relay-tester/prod/211521/) - £80.95
- [Sealey Vehicle Finder and Battery Monitor Sensor](https://www.mytoolshed.co.uk//sealey-vehicle-finder-and-battery-monitor-sensor/prod/620413/) - £29.95
- [Draper ETOT 12v Lambda Oxygen Sensor Tester and Simulator](https://www.mytoolshed.co.uk//draper-etot-12v-lambda-oxygen-sensor-tester-and-simulator/prod/837343/) - £42.95
- [Draper ETRT 12v/24v Automotive Relay Tester](https://www.mytoolshed.co.uk//draper-etrt-12v-24v-automotive-relay-tester/prod/837338/) - £49.95
- [Draper 13 and 7 Pin Towbar Socket Tester](https://www.mytoolshed.co.uk//draper-13-and-7-pin-towbar-socket-tester/prod/837517/) - £66.95
- [Draper Expert Vehicle Key Fob Tester](https://www.mytoolshed.co.uk//draper-expert-vehicle-key-fob-tester/prod/204240/) - £53.95
- [Sealey 15 Piece Universal Cable Ejection Tool Kit](https://www.mytoolshed.co.uk//sealey-15-piece-universal-cable-ejection-tool-kit/prod/150807/) - £128.95
- [Draper TST13C CAN Bus 13 and 7 Pin Towbar Socket Tester](https://www.mytoolshed.co.uk//draper-tst13c-can-bus-13-and-7-pin-towbar-socket-tester/prod/837518/) - £70.95
- [Draper ETGT 12v Glow Plug Tester](https://www.mytoolshed.co.uk//draper-etgt-12v-glow-plug-tester/prod/837342/) - £35.95
- [Sealey 6 - 24v Automotive Test Probe](https://www.mytoolshed.co.uk//sealey-6-24v-automotive-test-probe/prod/27464/) - £27.95
- [Draper ETIT 5v/12v Injector Tester](https://www.mytoolshed.co.uk//draper-etit-5v-12v-injector-tester/prod/837341/) - £46.95

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**URL**: https://www.mytoolshed.co.uk//other-diagnostic-electrics/cat/10003418/