Thanks, mgruber...I checked with a well known local Stealer parts dept - the 049 DID replace the 519, which DID replace the 352, according to him... there's also another thread here on X5world, (don't have the link in front of me), with someone doing the install with the 519 module... I'll leave a post here, inna week or so, let ya know how it all comes out, or if I'm bein' taken for a ride...