Installation:
1st. Test if car radio is OK.
2nd. Turn power off, detach the decorative frame, pull-out antenna’s connector, then put the amplifier between the original antenna and radio.
3rd. Red cable connect to DC 12V power cable. use 300cm adhesive tape to fix it in car. And then reinstall as it use to be.
4th. Turn car’s power on, open the radio and re-search programs, you will have more channel.