{"product_id":"2-52mm-tachometer-7-color-light-3000-4000-6000-7000-8000-rpm-meter-hourmeter-for-marine-boat-car-12v24v-waterproof-ip67-custom","title":"52 mm Tachometer Gauge with 7-Colour Backlight for Car and Boat","description":"\u003cp\u003eA diesel generator with no rev counter leaves you guessing at idle and load. This 52 mm tachometer reads revs from an RPM signal, lights the face in one of seven colours, and runs from a 12 V or 24 V supply. It suits cars, trucks, boats and generator sets without a factory gauge.\u003c\/p\u003e\u003ch2\u003eAdd a Rev Counter to Car, Boat or Generator\u003c\/h2\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eRev counter where there is none\u003c\/strong\u003e For cars, trucks, boats and generator engines that came without a rev gauge.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eSet the ratio to match\u003c\/strong\u003e Adjust the speed ratio for your engine's signal and the gauge keeps the setting.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eSeven backlight colours\u003c\/strong\u003e Tap the white wire to step through the colours until the face matches your other instruments.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eRuns on either vehicle supply\u003c\/strong\u003e One gauge takes a 12 V or 24 V feed, covering car and truck wiring alike.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eRated for wet engine bays\u003c\/strong\u003e The housing carries an IP67 rating, which covers dust and temporary immersion.\u003c\/p\u003e\u003cp\u003eThe wiring is five cores: black to ground, red to a 9-32 V DC supply, blue for the RPM signal, yellow for the backlight and white for adjustment. An installation manual comes with the gauge, so the wire colours do not have to be remembered from a forum post.\u003c\/p\u003e\u003cp\u003eMost installs need one adjustment. Hold the white wire to ground for about three seconds to enter the speed-ratio setting, then pulse it until the reading matches the engine and release. Leave the wire alone for three seconds and the gauge stores the figure itself, so the setting survives the next start.\u003c\/p\u003e\u003cp\u003eFive indicating ranges are offered: 3000, 4000, 6000, 7000 and 8000 RPM. The right one is the smallest range that still covers your engine's maximum, because a scale that just fits the engine is easier to judge at a glance than one that races past it.\u003c\/p\u003e\u003cp\u003eThe housing measures 52 mm across and weighs 150 g, in stainless steel and nickel-plated plastic. The IP67 rating covers dust and temporary immersion, which is worth having on a boat or in a wash-down bay, but it is a rating rather than a licence to leave the gauge submerged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: 52 mm (2 in) tachometer gauge\u003c\/li\u003e\n\u003cli\u003eIndicating ranges: 3000, 4000, 6000, 7000 or 8000 RPM\u003c\/li\u003e\n\u003cli\u003eSupply: 12 V or 24 V, red wire 9-32 V DC\u003c\/li\u003e\n\u003cli\u003eProtection: IP67\u003c\/li\u003e\n\u003cli\u003eBacklight: 7 colours, yellow wire for power and white wire to adjust\u003c\/li\u003e\n\u003cli\u003eSpeed ratio: adjustable to suit the engine signal\u003c\/li\u003e\n\u003cli\u003eWiring: black ground, red supply, blue RPM signal, yellow backlight, white adjust\u003c\/li\u003e\n\u003cli\u003eMaterials: stainless steel and nickel-plated plastic\u003c\/li\u003e\n\u003cli\u003eWeight: 150 g\u003c\/li\u003e\n\u003cli\u003eIn the box: tachometer and installation manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S6ffb9c5476af4158be699afea2fee323T.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S3fd8263b3c1e4eb4b10c150bd10245e52.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S41a0b3824b2f4930be0d84407830ca27W.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S91e8ec4e1ee44af8a253840081755cdew.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sb0c5d16367e04b0c8c6729a034277ea8t.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S7c79f416624443babc203f3efd583f31o.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S90a281a6c233456c9206ba576d8c367fD.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S1bb81f2029bb4d71b4c208171fb559a9a.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S09c346b7e51443ef89582ef5ecbdbf7bg.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sd061fcd111f44fe39c39d5a9ea01a07et.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa895be05e4ce42e2bf9e1bade5e937ecl.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S53f491374dd743398c8e24cb9232d162v.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa3252539d2144b7a98dfb994ca478efdp.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se9ebe37e438049228df1fb8b70ec9f35v.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se4508127e53a4de290438f2fc3207db7M.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se605a6c1b3604fdd996c1dd67b12e514J.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S6eaa40c2d8c34738a6e2eb5fab33c8f0X.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa1de4da226074f0480982c237c6a8a29W.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S00429e4da68e4985a689985f90691b0dW.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S8b2e723c5d0d43778d6611ff26b23667g.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S9f8b01d4d5da4269b4c7c48d3806275aV.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003eChoose the rev range that covers your engine, then wire it in and read the revs.\u003c\/p\u003e\u003cp\u003eSee more: \u003ca href=\"https:\/\/spy-shop.com\/collections\/diagnostics-tools\"\u003eexplore more diagnostic and workshop instruments in diagnostics \u0026amp; tools\u003c\/a\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"7000RPM BS","offer_id":64124020392266,"sku":"1005008263971223-7000RPM BS","price":56.05,"currency_code":"EUR","in_stock":true},{"title":"7000RPM BN","offer_id":64124020425034,"sku":"1005008263971223-7000RPM BN","price":56.05,"currency_code":"EUR","in_stock":true},{"title":"7000RPM WS","offer_id":64124020457802,"sku":"1005008263971223-7000RPM WS","price":56.05,"currency_code":"EUR","in_stock":true},{"title":"8000RPM 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