{"product_id":"msd-8737-three-step-module-selector","title":"MSD 8737 Three Step Module Selector","description":"\u003cp\u003e\r\nAs an example, we'll use a drag car with a Three Step Module Selec­tor plugged into the rpm socket of a 7AL-2 Ignition. The different rpm modules are activated when 12 volts are applied to a corresponding wire. By connecting one wire to the line-lock circuit, one module will be activated during the burnout. This helps keep tire temperatures consistent. When the line-lock button is released, the limit turns off. When you're on the starting line, you can activate the second limit through the clutch or trans switch. This provides a steady and consis­tent rpm for firm holeshots every time. When no modules are selected, the remaining high limit is active to protect the engine in the event of driveline failure.\r\n\u003c\/p\u003e\r\n\u003cp\u003e\r\n\u003c\/p\u003e\u003ch3\u003e Specifications: \u003c\/h3\u003e\r\n\r\n\u003ctable border=\"0\" class=\"descr-table\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_DES\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eThree Step Module Selector\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_INV\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eThree Step Module Selector\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_EXT\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eThe MSD Module Selectors allow you to choose two or three dif­ferent rpm limits that can be activated at different times.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_FAB\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eSet 3 RPM limits:\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_FAB\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eBurnout rev limiter\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_FAB\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eLaunch rev limiter\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_FAB\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eTop End rev Limiter\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_MKT\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eAs an example, we'll use a drag car with a Three Step Module Selec­tor plugged into the rpm socket of a 7AL-2 Ignition. The different rpm modules are activated when 12 volts are applied to a corresponding wire. By connecting one wire to the line-lock circuit, one module will be activated during the burnout. This helps keep tire temperatures consistent. When the line-lock button is released, the limit turns off. When you're on the starting line, you can activate the second limit through the clutch or trans switch. This provides a steady and consis­tent rpm for firm holeshots every time. When no modules are selected, the remaining high limit is active to protect the engine in the event of driveline failure.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eDescription_MKT\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eThe Module Selectors can also be used with an MSD Timing Control. By plugging the Selector into a retard module socket, you can acti­vate different retard amounts at select times. This is a great feature for engines being upgraded to a multi-stage nitrous system. With the addition of an RPM Activated Switch, you can use the Two Step to activate a shift light at different rpm.The Module Selectors must be used with an MSD Soft Touch Rev Control or a Timing Controller with a high-speed retard module. No rpm or retard modules are supplied.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eWarranty\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eLimited 1 Year Warranty\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eEmission Code\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003e5\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eProduct Type\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eModule Selector\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eWarning\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eCalifornia Proposition 65\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eBrand\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eMSD\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eLength\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003e1.6000\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eWidth\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003e6.0500\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eHeight\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003e8.0000\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr style=\"height: 19px;\"\u003e\r\n\u003ctd style=\"height: 19px;\"\u003eWeight\u003c\/td\u003e\r\n\u003ctd style=\"height: 19px;\"\u003e0.4500\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e","brand":"MSD","offers":[{"title":"Default Title","offer_id":47826820530389,"sku":"ds_BCCX_8737","price":258.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/8999\/9829\/files\/Three-Step-Module-Selector.jpg?v=1717592194","url":"https:\/\/shdp.ca\/products\/msd-8737-three-step-module-selector","provider":"SHDP Truck \u0026 Auto","version":"1.0","type":"link"}