no spark from cap

thanks everyone I got her fired up this am but she isnt charging the battery so off to check on a new alternator and recharge the battery. She ran awsome so I think there are many more miles on the old girl. Thanks again for the imput. What actually happened was when I changed the cap I used the breather on the old cap to attach the wires but the new cheap cap from the zone had the breather on the opposite side of the cap so all the wires were in the wrong position. This time I actually removed the distributor to make sure the points were gapped correctly and everything was tight and the nylon gear was in excellent shape then with number one at tdc I lined her all up and had my cousin turn her over while I checked number one for spark it had it but weak so we jumped her off of my van and she fired up after a few pumps and ran nice but then died after a minute or so and when I tried to fire her back up no very little juice so im taking the zone back there yellow top pos getting a new one (free of course) and I will replace the alternator later I think I have several from other projects. Thanks again to all who responded

Vaz