I installed a head unit in my 06 wrx Tr last weekend and My Fm reception sux now. I bought the plug and play harness and spliced it to the deck harness. When doin so I noticed that the plug and play harness had an output wire for a powered antenna where as the deck harness didnt. I also have tinted windows if that effects reception. I think the antenna is in the back windshield
Any one else having a similar problem? Fixes?
I bought this one: