Hey guys. New here and new to Nissan vehicles all together. Bought a used 06 Altima with the 2.5. A few small issues I'm having to deal with but the main one is dealing with starting the car. Most of the time I can go out and crank it up first try. Other times it will just click like the battery is dead. Went and bought a new battery and everything seemed fine until I went to the store and came back out and click, nothing. I started messing with the positive cable then it fired up. I did notice that instead of a bolt, there is a wing nut holding the fuseable link to the positive cable. Should I replace the whole link and see if that might be the problem? I'm running out of ideas.