E-350 backup camera wiring?

[pugslyyy]

I have a 2010 that has the factory backup camera wired into the rearview mirror. Does anyone have any advice for tapping into the camera signal to plug into a larger screen? I'm a big fan of backup cameras, but that 2" diagonal screen in the mirror is a little too small for my eyes these days.

I'm getting ready to drop a Pioneer double-din unit into the dash, which I would really like to be able to wire the factory backup camera into.

The options I have are
- *Electro Mirror W/Mic/Camera Display
- *Rear View Camera-Fixed