Need Help no power when key in ignition

[jamespond24]

Don't know what happen but for some reason when the key is in the ignition there's no power? I checked all the fuse and everything is fine. So what could cut power to the igntion switch?

[Ender]

A bad ignition switch. There are probably a number of things that could cause it though. Did you check the fuses in the engine bay? Maybe get your battery tested.

[jamespond24]

it turns out to be the main fuse

[Gabriel82]

oh then someone probably put the ground to the positive and positive to ground. I accidentally did that once and blew my main fuse.

[Ender]

My dad blew my main fuse by digging around with a screwdriver and shorted the 12+ terminal on the alternator to ground (which is the same as directly connecting the 12+ to - on the battery). I was so mad, it was my first day with the car and I had to leave it at their place overnight because the shops were all closed by then. I've heard that switching the + and - cables on the battery can do a lot more damage than just blowing the main fuse. Regardless, DON'T DO THAT and DON'T SHORT 12+ TO GROUND and this should rarely happen.