i don't have an in-dash monitor, but the only way to find out is to install it. so give it a go.
edit: i have seen in-dash monitors in bmw's before, so it must work
<img src='http://img268.echo.cx/img268/1430/zkwsig23iq.jpg' border='0' alt='user posted image' />
1996 328is Black
Suspension: MB Motoring 18x8, Kuhmo Supra 225/35/18ZR
Audio:Eclipse CD3414 HU
Lighting: ZKW W/ DDE PLUS