electric problems

[laser rs turbo]

I have a plymouth laser rs turbo, when I turn on the air conditioning or the heat, it seems to take a lot of power. If driving around, it slowly puts the battery down. I changed the battery and the alternator, and it still does the same thing. If anybody could help me, I would appreciate. Thanks

 

[turboguy25]

Firstoff check the fuse sometimes they burn and you cant tell and the volts wil jump the gap, and I would also ohm out the power wire going from the alternator to the fuse box,and then the fuse box to the batt sometime they get all corroded
good luck