73 SE dies after 5 minutes then has no spark

[purplechargerguy]

My 73 SE starts (sometimes) but then after about 5 minutes it dies and then there is no spark.  Any ideas on what could be the problem?  This is the same car that has to have the blinker on to get it to turn over.  I am beginning to hate electronics.

[nascarxx29]

Is the module well grounded .Anything tapped into _ neg coil connection tach etc