Radio stereo stopped working I need to fix it

If this is an original equipment power antenna, the electrical connector should match what's on the car. If you're adding an aftermarket antenna, there should be instructions with it that list the wire functions. There's usually a relay involved, but if your antenna only has three wires, it might be built into it.

You can try running the antenna directly off the battery with some fused jumper wires to see what works. This is just an educated guess, but my first thought would be black is for ground, black / red is for positive, and the pink wire on positive will make the mast go up and removing the pink will make it go down. If that works, your radio will have a switched wire that becomes live when the radio and the ignition switch are both turned on. That would connect to the pink wire for the control circuit. Many aftermarket radios use a blue wire for switched power for antennas and amplifiers. They are usually labeled too.

Caradiodoc

Check the fuses. That's what GregAl found and mentioned previously.

Did the new fuse blow? If all the fuses are good in the car and under the hood, pull the radio out and check for voltage on two pins in the connector. One should have 12 volts all the time and one should have 12 volts only when the ignition switch is turned on.

Then there's a problem in the radio.