Short story: 04 Mazda 6s (V6) - removed the battery to replace a coolant line fitting. Put everything back together and now my car doesn't even turn over.
Long story: I got a check engine light the other day for a cylinder 3 misfire and then I can hear and feel the misfire. I replaced the coil pack and plug and put it all back together. Car starts up, misfire is gone but notice a coolant leak from a "universal" T fitting that I replaced earlier this summer. Advanced actually had the OEM replacement in stock so I go pick it up. I removed the battery to have access to replace the fitting, put everything back together but my car won't start. Doesn't turn over, no clicks, nothing. All lights work, attempted to jump it, had the battery checked and it was good. I removed it and the battery try to see if I knocked a wire loose, nothing looks different, nothing loose. Put everything back together and still nothing.
Any suggestions would be greatly appreciated.