2 Step Module Slector 8739

2 Step Module Slector 8739 Product Description:

MSD 2 & 3 Step Module Selectors allow you to choose 2 or 3 different rpm limits that can be activated at different times. The 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.