I had one 6A box last me decades. 28 years and it was sold with the vehicle. Not one box since has lasted more than 6 weeks. Sent boxes back to MSD, all “FIXED” boxes failed within a week. MSD has called me up and I have had chats with MSD tech during this time on the phone and have gone through everything. They have zero clue on why there product was failing.
MSD is a company I will never trust again.
