Took the car for a drive today and got it hot driving around. A mix of hard driving and cruising. came home shut it off and it wouldn't start. took the number one wire and plugged in a new plug and there was zero spark. I've cleaned all the bulkhead connectors and made sure I don't have loose connections there. I really think this 15 year old MSD is just starting to give up. I will try testing all the circuits first before I spend any money and I'll see if I've missed something. Thanks