Shut off after forty five minutes of drive time

We recently changed fuel pump, starter, alternator, battery terminals and so much more. So we test drive it my wife drove up street maybe 45 minutes driving time total if that. All the lights on dash came on and car shut off. It started back up to get her home. So I go out there and double check connections all fluids won't start without antifreeze in it. So left it alone that night came back next day to try to tackle it again and started it and now it stay started but everything locks up steering wheel, brakes and when you hit the gas pedal the A/C will jump in and out.