Car starts perfect sometimes and then doesn't

[Daverdplums]

Hey, I'm in a bind and don't really understand much. I'm new to the forums so sorry if I'm breaking any rules but I'm just in a pickle currently. My car starts perfectly at times and then doesn't. I'll drive somewhere and sometimes the car will die or something and not start. All the lights on the cluster turn on but all I hear is a click and no start. Sometimes it'll be fine though. I went to auto zone and they tested the battery, starter and alternator and said they are all working as they should. I don't understand what the problem could be. Just passed smog as well... Sometimes if you keep trying to crank it, it'll turn on. I got a jump and it also turned on. I'm stuck currently at my school and this is the 7th time this has happened. I put some pictures up to see if those could be the problem. I just bought the car last week and these wires are weird. Thank you, I apologize if this is a wrong way to post. 

[TrevC]

Hi David...welcome to the Club

I am thinking battery terminals are corroded or loose, possibly.

Could you upload a picture of the battery terminals as they are.

Cheers   Trevor