Follow along as we install this new MSD Digital-6 ignition control module on our off road truck! See all the details and every thing that comes with this MSD unit in this months issue of Off-Road ...

The reason: The placement of the thick film ignition (TFI) module placed too close to the engine block, causing the heat-sensitive module to suddenly fail when it gets above 257 degrees.

Typically, when an ignition control module of this type fails it would be one of the three drivers (transistors) within it that controls a specific ignition coil giving up.