Pontiac Repair: problems with my grand prix 1995, fuse box, tight connection

Question
I'm having problems starting my car, the battery is new also the alternator they told me that next to the battery there is a small box with fuses, there is a red cable that comes from that box to the battery and it tighten to a base in the fuse box, that part is cracked once i move that cable the car starts, but now I have to put a booster to the battery so it can start. can you help me or tell me if this is the part that is damage in my car?

Answer
THE CABLE GOES TO A JUNSCTION BLOCK AND OR BOX IF YOU MOVE THAT CONNECTION AND IT STARTS THEN THAT CONNECTION HAS FAILED YOULL NEED TO EITHER GET A NEW JUNCTION BLOCK OF FIGURE OUT A WAY TO RECONNECT IT TO GIVE IT A GOOD TIGHT CONNECTION IF ALL ELSE FAILE GET A USED ONE FROM THE SALUVE YARD   25.00