I Have A CB Question.

You don't need anything crazy to start as others mentioned. If you want to spend a few bucks more, the Cobra 29 has stood the test of time as a solid radio that can be improved upon down the road. Or, just leave it alone and have a solid radio that will work every time you switch it on. The antenna is built into your truck, the owners manual might let you know where they run the coax for the antenna. Red = hot / black = ground.

There's a mounting plate in the dash for the cb, the red and black wires are right behind it. I need to look for a 3rd coax cable though, right?

Yep. It should be back there, most new trucks come pre wired but it might be tucked in there only to be found with cut knuckles, a flashlight and some foul language.

Ok, I found the red and black hookups. Also found the coax antenna wire. The end of it was stuck in the defrost grate, so the wire was hiding amongst my satellite radio wires. Found ask the hookups, now just need the cb. Woohoo.

You don't need anything crazy to start as others mentioned. If you want to spend a few bucks more, the Cobra 29 has stood the test of time as a solid radio that can be improved upon down the road. Or, just leave it alone and have a solid radio that will work every time you switch it on. The antenna is built into your truck, the owners manual might let you know where they run the coax for the antenna. Red = hot / black = ground.

I have a 2015 Prostar and the wires are green and white instead of red and black. So in my case what would be the ground?

Green is hot, white is not :)

THe Cascadia Evolutions have the CB bracket and cables hidden behind the drivers side eye glass holder. remove the 2 over head screws the entire insert will pop out. remove the eye glass holder look for the antenna and wire connections with a flash light the wires are labeled make sure you connect them correctly or you'll blow your radio.

Yea, you're going to need an antenna and coax cable with connectors if your truck doesn't already have them installed. Both my trucks already had them installed and I only need to provide the CB radio. The max range on a barefoot CB is only about 4 miles max. Most times you will only hear about 1 mile or so because you will tend to increase the squelch till it takes a strong signal to overcome. The red connector is the positive voltage and the black is the ground. Look around for the coax (thick black wire) with a connector on it. Look on the outside of your truck for antenna(s). If you don't have an antenna and coax, then you might want to check with your shop for solutions.

There is an antenna in the roof of your Freightshaker. Give that a try and see if it meets your needs before adding anything else. I found that the internal antenna is adequate for me

I cant help you but others might if you say what make, model and year your truck is just saying.

2015 Freightliner Cascadia Evolution to be more specific.