2014 freightliner cascadia evolution has no 120v plugs?

You are not going to find 120 volts anywhere on a tractor that does not support it with either a APU/Generator or Inverter properly wired to the batteries.

 

My 2016 has three different sets of 120 vac outlets, with the shore power plug outside.
But it was an option on the truck.

 

Not all evolutions have the 120 outlet options. Most that have it, it will be on the both sides in the cut out section of the cabinet and one under the bunk. The ones that have that option works when connect to sure power. If you have that option you can install an inverter and run an extension from the inverter to the shore power plug and the outlets will work, or if you have an apu run an extention from the apu to the shore power plug and the outlets will work.

 

Buy 12 volt tv.

 

How much are those 12 volt TV at the truckstop, probably cheaper to buy an inverter and have the option to plug in other appliance

 

You can by one of those pocket inverters that plug into you 12v socket.
They're only 20 bucks at the truck stops. 75watts.

 

Expensive 12 volt tv or expensive pure sine wave inverter.