You hooked the ground wire to you amp to a hot wire. The hot wire is black and it's the hot wire to the cigarette lighter. I used to be a Ford mechanic and saw this alot and charged people lots of money to fix their Stupid mistake.
The cause of this issue can be blown fuses in the car. If the fuses are not blown, there is a fault in the electrical system.
No unless the belt driving the alternator and cooling fan breaks
system failure
maybe the bulb is burnt
If you mean no electrical power then the computer couldn't give you a warning light because it has no power to operate. Common causes of lack of electrical power include a blown fusible link, a blown main relay ( not all cars have them ), a dead battery or a severe short.
A dead or weak battery is one of the more common reasons for a car to experience electrical problems. A bad alternator, blown fuse, or broken wire are other common causes.
There are a variety of reasons the hazards lights may not work. The flasher module could need replacing. The fuse may be blown. The bulb may be blown. There could even be an electrical malfunction.
You may have a flat battery, a blown fuse or a loose wire. You need to trouble shoot your electrical system to find the fault.
fuses are blown, or bulbs are blown
A car battery causes the headlights to shine
some general causes: leak in cooling system (including possible blown head gasket) resulting in loss of coolant; defective thermostat
pressure test the coolant system you will find a blown intake or head gasket