I installed a new head unit in my truck, a 2003 Ranger XLT Supercab. It sounds really good and I like the backup camera and the Apple Carplay. FYI though, if you are going to do this, make sure you buy a dash kit before starting the installation. I didn't. I was still able to get the head unit installed but it doesn't look the best. Also, the Metra wiring harness adaptor makes things super easy to wire up. I'll link it below.
The Backup camera was pretty easy to wire up. I started at the rear and worked my way forward. For routing the wires I just followed a white cable (Not Sure What its for) that was already on the inside of the left frame rail. I followed that wire up until the engine bay, where I fished it up[ past the exhaust manifolds and pushed it through the steering collum grommet, which I had cut a small slit in prior to this for some lightbar wiring. After that, it was the simple step of pulling the wire up into the dash and connecting it to the head unit.
I have also replaced the front 2 speakers with some 6x8 Pioneer ones from Walmart that I got for like $65, TS-800M is the model I think. Rear Speakers are still stock, and I expect them to blow, as my head unit does 85 watts per channel and I doubt the stock Ford speakers can handle that for long.
I will be making a full-blown post on this. As of now, I don't have any photos, but I will work on getting those, and once I do that post should go up.
Wiring Adaptor link
URL in case the link decides to not work