I have a 2012 Tundra Crewmax and I just got a 10.1" android head unit. It came with two 4G antennas and a GPS antenna. So I am wondering if those can all be pit in behind the unit or do they need to be up on the dash somewhere? I was thinking that since the gps on my phone works and the 4G on my phone works without all that they would be good anywhere. If you have to put them on the dash, whats the best spot and how to rout it? Any help would be great. Thank you in advance.