This Sideview camera is typically mounted on the underside of a mirror.  It can be hooked up to either an Aftermarket radio/monitor.

 
Camera Features:
 
waterproof CMOS color rear-view camera 
universal fit
170-degree wide angle
selectable reverse image
works in low light .5 LUX
resolution: 600 TV lines (720 x 480)
IP67 and 68 waterproof