Alternator not charging thus battery

[jerry73]

Ok so I've been driving my sisters old 1978 ex-diesel 1500 with a carburated 454 out if a 1991 Chevy,my problem is I have a brand new starter,alternator,battery,and cables+ the cable from the battery to the starter...and it won't start unless I charge the battery every night,it only drains the battery when I drive it,I can let it set over night with a full charge and it'll be fine when morning comes,all the new parts I have have been tested and are all fine... Any ideas? Also sometimes when I go to start it there is sparks that I can see that are either coming from the drivers side under the truck or under the dash inside
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