1998 buick battery connection problem

I need help with a problem I am having with my car. Not sure whats going on so if anyone has an idea could they please let me know. My car while I am driving it will some times (randomly) completly shut down engine and all power. To get it to run again I wiggle the wires that are connected to the battery and ususally the power will come back on and I will be able to restart my car and go. The battery gauge on my car dash board has the needle all the way to the right just above the red (which would be towards the positive side). It just so happends that when i wiggle the Postitive connection wires to the battery the power will come back on again (some times). Also my car will be fine ill park it go do what i do and when i come back wont start up at all. Power comes one but the engine wont start. Again i wiggle some wires or give it some time and usually the car will start. At the moment i dont know if i need new wires or a new battery, both, or something completely different. If anyone has had a problem like this and knows a solution i would appreciate whatever advice you have to give.

That's a fairly common problem. You need to remove the bolts & rubber boots from the cable ends & clean off the corrosion with sandpaper or wire brush. Coat with dielectric grease & reassemble. The dielectric grease will help prevent the corrosion from coming back. It can be a pain getting the boots on & off if its really cold where you're at, a blow dryer may help.

Just a quick note: remove the neg. cable first and make sure to seperate and clean between both positive cables ( a known problem area) good luck.

Be sure to turn off the electronic air conditioning with the key turned ON and let it finish to the off setting before removing cables. Some people report problems with their auto temp control AC after changing their batteries. I don't know if it can affect standard AC units, but I'd rather not take a chance.

Like auto trainey said, remove negative first.

Separate the two positive connectors and check for corrosion between them. Also I suggest cutting lengthwise down into the plastic to see that the copper wires aren't corroding down inside the red plastic coverings. Check connections at other ends of cables while they're not connected to the battery--at the starter, engine ground, alternator connection, and the ground wires that run to the fender next to the battery. I loosen the nut there and retighten to be sure of good contact.

You might have a problem with a broken post inside the battery not making connection at times. I've read about a few of those in posts.

Reconnect positives then negatives.