{"product_id":"jfind-jf107-relatestare-for-bil-mc-12-24-v-4-5-stifts","title":"JFIND JF107 – Relay Tester for Car \u0026 Motorcycle (12\/24 V, 4-5-pin)","description":"\u003c!-- READY HTML FOR SHOPIFY – JFIND JF107 Relay Tester 12\/24 V (4- \u0026 5-pin) \/ felkodslasare.se --\u003e\n\u003csection itemtype=\"https:\/\/schema.org\/Product\" itemscope=\"\" id=\"jfind-jf107-relay-tester\"\u003e\u003cmeta itemprop=\"name\" content=\"JFIND JF107 – Relay Tester for Car \u0026amp; Motorcycle (12\/24 V, 4- \u0026amp; 5-pin)\"\u003e \u003cmeta itemprop=\"brand\" content=\"JFIND\"\u003e \u003cmeta itemprop=\"sku\" content=\"JF-JF107-RELAY\"\u003e \u003cmeta itemprop=\"mpn\" content=\"JF107\"\u003e \u003cmeta itemprop=\"category\" content=\"Diagnostic Tools, Relay Tester, 12V, 24V, Car Tools, Motorcycle Tools\"\u003e \u003clink itemprop=\"url\" href=\"https:\/\/www.felkodslasare.se\/\"\u003e\n\u003ch2\u003eJFIND JF107 – Relay Tester for Car \u0026amp; Motorcycle (12\/24 V, 4- \u0026amp; 5-pin)\u003c\/h2\u003e\n\u003c!-- SHORT VERSION (200–300 words) --\u003e\n\u003cdiv itemprop=\"description\" id=\"kortversion\"\u003e\n\u003ch2\u003eShort Version – Quick Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eJFIND JF107\u003c\/strong\u003e is a \u003cstrong\u003euniversal relay tester\u003c\/strong\u003e that quickly checks the function of common \u003cstrong\u003e4-pin (30\/85\/86\/87)\u003c\/strong\u003e and \u003cstrong\u003e5-pin (30\/85\/86\/87\/87a)\u003c\/strong\u003e relays in vehicles. It supports both \u003cstrong\u003e12 V\u003c\/strong\u003e and \u003cstrong\u003e24 V\u003c\/strong\u003e, making it equally useful in passenger cars, light trucks, and many motorcycle\/ATV applications. Connect the relay, select the voltage level, and let the tester simulate the control and load circuit to reveal typical faults such as \u003cem\u003ecoil breaks\u003c\/em\u003e, \u003cem\u003estuck contacts\u003c\/em\u003e, \u003cem\u003ehigh contact resistance\u003c\/em\u003e, or \u003cem\u003eincorrectly wired pins\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp\u003eThe clear indicator logic shows if the relay pulls, if NO\/NC switching occurs, and if the contact resistance appears abnormal. The JF107 saves time when troubleshooting issues with, for example, cooling fans, fuel pumps, high beams, AC clutches, glow plugs, and auxiliary relays. The unit is compact and convenient for bench work or directly at the vehicle, and protection circuits help it withstand common workshop scenarios. Note that the JF107 is a \u003cstrong\u003erelay tester\u003c\/strong\u003e – it does not replace a full-scale battery or charging system test, but it displays the vehicle voltage during testing to detect obvious supply problems.\u003c\/p\u003e\n\u003cp\u003eDo you want to supplement with fault code reading for the engine\/exhaust system? See our \u003ca title=\"Handheld fault code readers\" href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ehandheld fault code readers\u003c\/a\u003e. 🔧\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- CONTENTS --\u003e\u003cnav id=\"innehall\"\u003e\n\u003ch2\u003eContents\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner\"\u003eFeatures \u0026amp; Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#kompatibilitet\"\u003eCompatibility\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#manual\"\u003eManual \u0026amp; Step-by-Step\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#felsokning\"\u003eTroubleshooting \u0026amp; Interpretation\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently Asked Questions (FAQ)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#tips\"\u003eTips \u0026amp; Best Practices\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#forpackning\"\u003ePackage Contents\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ansvar\"\u003eImportant Notes \u0026amp; Disclaimer\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#sammanfattning\"\u003eSummary\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/nav\u003e\u003c!-- SPECIFIKATIONER --\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e JFIND JF107 Automotive Relay Tester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Relay tester for 4- and 5-pin relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e 12 V \/ 24 V (vehicle use)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e JF107\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Types:\u003c\/strong\u003e 4-PIN (30\/85\/86\/87), 5-PIN (30\/85\/86\/87\/87a) – standard mini\/ISO layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndication:\u003c\/strong\u003e Status LED\/display for coil pull-in, NO\/NC switching, deviation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Basic protection against polarity reversal and short transient spikes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsage:\u003c\/strong\u003e Bench or vehicle test (external 12\/24 V power supply via battery)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Group:\u003c\/strong\u003e Automotive enthusiasts, workshops, field troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FUNKTIONER --\u003e\n\u003csection id=\"funktioner\"\u003e\n\u003ch2\u003eFeatures \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick Relay Check:\u003c\/strong\u003e Detect coil breaks, burnt contacts, sticky armatures, and incorrect pin layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 V \u0026amp; 24 V:\u003c\/strong\u003e Suitable for passenger cars, light trucks, some construction machinery, and motorcycle applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4\/5-pin Support:\u003c\/strong\u003e Testing of NO\/NC switching (87\/87a) on 5-pin relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicator Logic:\u003c\/strong\u003e Visual feedback for pull-in and contact switching during load simulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-Saving:\u003c\/strong\u003e Avoid unnecessary relay replacement by chance – test and confirm the fault first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Range of Applications:\u003c\/strong\u003e Fuel pump, fan, AC clutch, lights, glow plugs, auxiliary relays, etc.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- KOMPATIBILITET --\u003e\n\u003csection id=\"kompatibilitet\"\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe JF107 is designed for \u003cstrong\u003estandardized mini\/ISO relays\u003c\/strong\u003e with pin designations \u003cstrong\u003e30, 85, 86, 87, 87a\u003c\/strong\u003e. Supports both \u003cstrong\u003e12 V\u003c\/strong\u003e and \u003cstrong\u003e24 V\u003c\/strong\u003e. Special relays (micro relays, solid state, time relays, or OEM-specific with non-standard layouts) may require other methods and are not always supported by this tester.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- MANUAL --\u003e\n\u003csection id=\"manual\"\u003e\n\u003ch2\u003eManual \u0026amp; Step-by-Step\u003c\/h2\u003e\n\u003ch3\u003e1) Safety \u0026amp; Preparation\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eWork with the \u003cstrong\u003eignition off\u003c\/strong\u003e and in a ventilated environment. Wear safety glasses.\u003c\/li\u003e\n\u003cli\u003eIdentify the relay's \u003cstrong\u003epin layout\u003c\/strong\u003e (embossing on the relay casing): 30 (common), 85\/86 (coil), 87 (NO), 87a (NC).\u003c\/li\u003e\n\u003cli\u003eConnect the tester to the correct \u003cstrong\u003esupply voltage\u003c\/strong\u003e (12 V or 24 V) from the vehicle's battery or lab power supply.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e2) Connect the Relay\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePlace the relay in the tester's \u003cstrong\u003e4- or 5-pin\u003c\/strong\u003e socket according to the marking.\u003c\/li\u003e\n\u003cli\u003eEnsure the relay is inserted \u003cstrong\u003estraight and fully seated\u003c\/strong\u003e – crooked insertion can lead to incorrect readings.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e3) Run the Test\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSelect the correct \u003cstrong\u003evoltage mode\u003c\/strong\u003e (12\/24 V).\u003c\/li\u003e\n\u003cli\u003eStart the test. The tester excites the coil (85\/86) and monitors \u003cstrong\u003eswitching between 87\/87a\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFollow the \u003cstrong\u003eindicators\u003c\/strong\u003e: \"Coil OK\/Fail\", \"Switch NO\/NC OK\/Fail\", possible warning for abnormal condition.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e4) Interpretation \u0026amp; Action\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil not pulling in:\u003c\/strong\u003e Coil break or incorrect voltage mode. Measure coil resistance, verify 12\/24 V selection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulls in but does not switch:\u003c\/strong\u003e Worn\/burnt contacts or mechanical sticking – replace relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermittent:\u003c\/strong\u003e Vibration\/temperature-sensitive relay – recommended replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e5) Completion\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the tester and \u003cstrong\u003edisconnect the power supply\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003ePull the relay straight out. Label defective relays for traceability.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003c!-- FELSÖKNING \u0026 TOLKNING --\u003e\n\u003csection id=\"felsokning\"\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; Interpretation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTester does not start:\u003c\/strong\u003e Check polarity and that the supply voltage matches the selected mode (12\/24 V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay clicks, but the load does not work in the car:\u003c\/strong\u003e Check in the vehicle – fuse, wiring, ground point, socket in the fuse box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"OK\" on the bench, but fault in operation:\u003c\/strong\u003e The relay may fail under heat load\/vibration – replace with a quality relay and check current requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pin test:\u003c\/strong\u003e Confirm that \u003cstrong\u003e87a (NC)\u003c\/strong\u003e breaks when the coil pulls in and that \u003cstrong\u003e87 (NO)\u003c\/strong\u003e closes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FAQ --\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003e1. Does the JF107 support both 12 V and 24 V?\u003c\/h3\u003e\n\u003cp\u003eYes. Select the voltage mode that matches the relay\/vehicle before testing.\u003c\/p\u003e\n\u003ch3\u003e2. Can I test any relay?\u003c\/h3\u003e\n\u003cp\u003eThe JF107 is designed for \u003cstrong\u003estandard 4\/5-pin ISO relays\u003c\/strong\u003e. Special\/solid-state\/time relays may require other equipment.\u003c\/p\u003e\n\u003ch3\u003e3. Is it a battery tester?\u003c\/h3\u003e\n\u003cp\u003eNo. It is primarily a \u003cstrong\u003erelay tester\u003c\/strong\u003e. It shows the supply status during the test but does not replace a complete battery\/charging test.\u003c\/p\u003e\n\u003ch3\u003e4. Can I test the relay without removing it from the car?\u003c\/h3\u003e\n\u003cp\u003eIt is recommended to \u003cstrong\u003eremove the relay\u003c\/strong\u003e and bench test it for safe and repeatable measurement.\u003c\/p\u003e\n\u003ch3\u003e5. What do the pin numbers mean?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e30\u003c\/strong\u003e = common load, \u003cstrong\u003e87\u003c\/strong\u003e = normally open (NO), \u003cstrong\u003e87a\u003c\/strong\u003e = normally closed (NC), \u003cstrong\u003e85\/86\u003c\/strong\u003e = coil (polarity usually does not matter for mechanical relays).\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- TIPS --\u003e\n\u003csection id=\"tips\"\u003e\n\u003ch2\u003eTips \u0026amp; Best Practices\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel relays:\u003c\/strong\u003e Keep functional ones as reference, clearly label defective ones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck load current:\u003c\/strong\u003e A relay can \"click\" but still fail under high current – replace with the correct current rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean sockets:\u003c\/strong\u003e Oxidized relay sockets in the car can cause heat and voltage drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat test:\u003c\/strong\u003e Suspect intermittency? Gently heat\/cool and test again.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplement diagnosis:\u003c\/strong\u003e For fault code reading and live data – see our \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ehandheld scanners\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FÖRPACKNING --\u003e\n\u003csection id=\"forpackning\"\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × JFIND JF107 Relay Tester (12\/24 V)\u003c\/li\u003e\n\u003cli\u003e1 × Quick Guide\/User Manual\u003c\/li\u003e\n\u003cli\u003e— External power source\/clamps may be required (not included depending on package)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ANSVAR --\u003e\n\u003csection id=\"ansvar\"\u003e\n\u003ch2\u003eImportant Notes \u0026amp; Disclaimer\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOnly for \u003cstrong\u003eDC 12\/24 V\u003c\/strong\u003e. Do not use on other voltage levels.\u003c\/li\u003e\n\u003cli\u003eTest \u003cstrong\u003eremoved relays\u003c\/strong\u003e to avoid unintentional short circuits in the car.\u003c\/li\u003e\n\u003cli\u003eAlways follow the vehicle manufacturer's service procedures. All use is at \u003cstrong\u003eyour own risk\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe relay's rated current and type must correspond to the vehicle's specification before reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- SAMMANFATTNING --\u003e\n\u003csection id=\"sammanfattning\"\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eJFIND JF107\u003c\/strong\u003e is a \u003cstrong\u003ereliable, fast, and simple\u003c\/strong\u003e solution for verifying 4- and 5-pin relays at \u003cstrong\u003e12\/24 V\u003c\/strong\u003e. Its clear indication and support for both NO\/NC tests make troubleshooting efficient – whether for fuel pumps, fans, lighting, or other critical auxiliary circuits. An essential part of every toolbox. 🔧\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- SEO (HIDDEN) --\u003e\n\u003cdiv style=\"display: none;\"\u003eJFIND JF107, relay tester, 12V 24V, 4 pin 5 pin, car relay, motorcycle relay, ISO mini relay tester, 30 85 86 87 87a, relay troubleshooting, automotive tools, diagnostic tools, battery voltage during test, felkodslasare.se, fuel pump relay, fan relay, AC relay, glow plug relay.\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Jfind","offers":[{"title":"Default Title","offer_id":54508685754636,"sku":"FEL-J0009","price":13.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H3f6d427622494162abc11525e4b7c373R.png?v=1781472752","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/jfind-jf107-relatestare-for-bil-mc-12-24-v-4-5-stifts","provider":"Felkodsläsare","version":"1.0","type":"link"}