Paint not setting up.

Product description says you needed to add 100 % BS *** to the base coat before the 1 to 1 UHhardener. https://www.paintdocs.com/docs/webPDF.jsp?SITEID=SWPCGAUTO&doctype=PDS&prodno=764423132600&lang=2
BTW... I would not consider a dash pad as 'underhood"