Old work horse truck , first are you getting spark from coil when you ground coil wire ? If not then get a 12volt test light and install clip lead to neg of battery turn key to on position and touch positive post of test lead to positive post of coil you should see the test light light up if not you are not getting power to the coil or the truck them you would have to check for a blown fuses or a wire problem to key switch next if you are getting power to the coil then make sure you still have it when cranking. Get back to me after you do this.