I have the REC NAV unit and the rear VES dvd system in my 06 jeep commander. I was wondering if i put in an aftermarket DVD/NAV unit if i could still use the VES option and how that would work and if i could still use my factory NAV connections or whatever. I am currently puttin monitors in my headrests and takin pics i will post that procedure on here in a week or so. I just wanna still use the VES up front and all of that... I hope you all can help. I've been lookin all over the internet but i cant get a clear answer for these questions...