VXOC Astra-J/GTC

Full Version: radio reception android headunit
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i have swapped the dc400 for a android headunit and now i have got practically no radio reception at all i understand that some of the cd400 radios came with a radio amplifier for the reception mine is a 13plate  facelift model

any help would be great thanks from what i have read is that you have to power the amplifier but i dont know which wire that is 


many thanks 
andy
If fitted at factory it will already be powered.