Originally Posted by SVXdc
Powering your camera from the reverse lights signal is fine on the Forester CP635U1, Impreza/Crosstrek CM631UD, and OEM Kenwood Navi (w/ 7" touchscreen, DVD-based maps).
It is the new OEM Fujitsu Ten nav (w/ SD card map data) that won't work properly with a camera powered from your reverse lights. The FT nav must see the camera's video signal each time the HU boots. So you'll need to use either the HU's 6 Volt camera power supply pin, or the car's 12V Accessory power. (or design a circuit that powers the camera for a short period when you first turn on ACC, and also whenever you shift into reverse)
What cam do you recommend? Do i just need your 8 pin harness?