Tell us more so we can assist. Spend some time actually crafting a message that people can decipher instead of making us guess what sort of actual makes/models/equipment you currently have. Understand, there are many, many permutations of what you describe in such haste.
Keep in mind that it's a new device, more importantly, iOS6 is new too. When some apps are updated some of your prior seamless functionality/connectivity will probably return. YMMV.
My 4s connects to all out TV's in our boats, RVs.
My 4s also connects to all my auto radios allowing for full video , turn by turn nav and netflix, Pandora etc.
The iPhone has no connectivity so is it really a upgrade of a step backwards?