For my Christmas gift I installed a aftermarket in dash Android navigation system https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
in my 2006 F-150 TV. In addition to the navigation system (Sygic) it has a backup camera input. I replaced tailgate handle with one that has hole for camera, installed camera https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
and ran cable to nav system and tied power into reverse light.
It has 2 USB cables which I mounted on each side of the cig lighter for charging phones or tablets.
The nav system came with ODB2 scanner software (Torque Pro)for monitoring my engine system. Did not have a tach in my truck. just had to add plug in blue-tooth OBD2 adapter which I already had.
Also blue-tooth connection for cell phone hands free.
I got most of this system from Amazon.
can't wait for first camping trip to try it out.