Msd Two Step Instructions

Disconnect the 2 pin connectors from each of the eight ignition coils.

Msd two step instructions. This tab contains two sub tabs with plots that are similar to msd pn6010 pn6012 ignition controllers. These msd 2 step module selectors let you choose from two different rpm limits that can be activated at different times. The unit is easy to install with factory style connectors for a splice free installation. For example you can use a lower rpm module for staging and then automatically switch to a higher rpm module after you release your trans brake or line lock.

Page 1 msd module selectors two step pn 8739 three step pn 8737 parts included. When 12 volts are removed from the blue. Gm performance fans will be geeked to learn about this direct plug in 2 step launch control. Page 7 installation instructions custom 1.

The engine speed tab is similar to springs and weights that would normally be found in a distributor. Do not use solid core spark plug wires with any msd component. The digital 2 step control is designed specifically for the msd digital 6al ignition control pn 6425. Connect all eight of the 2 pin male connectors from the msd harness into the factory coil connectors.

Connect the 3 pin harness to the 2 step and connect the black wire to the good engine or chassis ground. This two step module is an add on for the msd digital 6al and its purpose is to stop the 6al from delivering spark to the engine holding it at a specified rpm the two step component is used to hold the engine at a lower rpm to control wheel spin and grip to achieve a shorter launch time. It provides the ability to set an rpm limit to be used during the launch of the vehicle through a switch or tied into a line lock device or trans brake. 1 parts bag wiring terminals 1 module selector 4 mounting screws note.

This helps keep tire temperatures consistent. Page 2 installation instructions rev limiter step module selector pn 8739 black autotronic controls corporation 1490 henry brennan dr el paso tx 79936 module 2 module 1. The msd 6al 2 ignition can be used with most stock coils and aftermarket coils designed to replace the stock coils. There is a blue wire coming out of the 2 step that controls when the launch.

As an example we ll use a drag car with a two step module selec tor plugged into the rpm socket of a 7al 2 ignition. The line of msd blaster coils pn 8202 pn 8207 and pn 8222 are great for street and mild racing. By connecting one wire to the line lock circuit one module will be activated during the burnout. There is a useful led built into the digital 2 step.

When you re staged you can hold the pedal to the floor while the rpm stays at a consistent level producing consistent launches. The different rpm modules are activated when 12 volts are applied to a corresponding wire. This led will illuminate when 12 volts are applied to the blue wire and the low rpm limit of the 2 step is active. They require the use of plug in modules which are available separately.

For extended high rpm operation the blaster hvc pn 8252 or hvc ii pn 8253 are recommended.