How do you get the antenna to go up with a new stereo installed in 1989 Mercedes 190E 2.6 if wire is connected but raise now even from switch?

1. Check the fuse. There may be a blown fuse that is preventing the antenna from raising. Look in your owner's manual to find the location of the fuse for the antenna, and check it to see if it is blown. If it is, replace it with a new fuse of the same amperage.

2. Check the antenna motor. The antenna motor may be faulty, preventing it from raising. To check the antenna motor, turn on the radio and then press the antenna switch. If you can hear the antenna motor running, but the antenna is not raising, then the motor is likely faulty. You will need to replace the antenna motor.

3. Check the antenna mast. The antenna mast may be damaged or broken, preventing it from raising. To check the antenna mast, inspect it visually to look for any damage. If the mast is damaged, you will need to replace it.

4. Check the antenna wire. The antenna wire may be disconnected or broken, preventing the antenna from raising. To check the antenna wire, inspect it visually to look for any damage or disconnections. If the wire is damaged or disconnected, you will need to repair or replace it.

5. Check the antenna switch. The antenna switch may be faulty, preventing it from sending a signal to the antenna motor. To check the antenna switch, turn on the radio and then press the antenna switch. If the antenna does not raise, then the antenna switch may be faulty. You will need to replace the antenna switch.

If you have checked all of these things and the antenna still does not raise, then you will need to take your car to a qualified mechanic for further diagnosis.