Obo, your car likely has a built in antenna amplifier (I believe all modern cars do). It needs 12V to operate. You'll have to find out which wire that is on your car; every car is different. On my car it is blue. Take that wire and connect it to the same 12V wire that the radio gets its power from. That should fix the reception,
You can connect it to either the 12V switched power (that comes on with the ignition) or the constant 12V (that provides constant power for the radio's memory) that you already connected the radio to. The switched one is better because otherwise the antenna amplifier will be on and drawing battery power all the time.
You can connect it to either the 12V switched power (that comes on with the ignition) or the constant 12V (that provides constant power for the radio's memory) that you already connected the radio to. The switched one is better because otherwise the antenna amplifier will be on and drawing battery power all the time.