Welcome to the Club!!!!
Man, Did you ever come to the right place, it doesn't get any better than this!!!
First of all, Myron & Davis is not OEM and your Armada is not prewired but it can be tapped into to work just like OEM and this site is the only place in the World that I've seen where you can get the knowledge how to do it.
Here's mine and this is what we should be able to help you accomplish: https://www.clubarmada.com/forums/vbp...?do=view&g=259
Next, what exactly is that $450 getting you?? I'm gussing it's just the Screen and it would help to know the size. The model number corresponds with the screen size. Mine is a ANS178 (7.8" screen), several have the ANS190 (9.0" screen) and one of our sponsors is running a sweet deal on the ANS185 (8.5" screen).
For the DVD Player, I like the Myron & Davis AD212 Player but that same Sponsor has a Power Acoustik for $125 so he can set you up with the 8.5" Screen and Player for $524 shipped to your door.
This is the best deal that I've seen anywhere: https://www.clubarmada.com/forums/showthread.php?t=9601
Next, you'll need the additional Shopping List and How-To so this should give you a good start:
Here's all the info that anyone should need summarized below copied from this Thread: https://www.clubarmada.com/forums/showthread.php?p=87733
Here's the last times that I answered this question:
For the Monitor Install:
Read down through this real quick:
Spend a LOT of time looking at llajumpvid's post
and links. It's way easier than it looks.
Now, for the OEM appearance
if you want to go this far:
Immediate Shopping List
Get this ordered now, it took mine 2 weeks to arrive:
Cheap and easy to Splice RCA cables along with a good set of RCA cables. I bought these from Best Buy:
Lastly, if you want to spare yourself a little trouble, you can use a PC Pin Jumper available for very cheap from almost any PC store inside the Harness. It's one of the Blue things in this pic: