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Cheers Jochen, I'm just trying to get a good price on a mk4 now. I did on the weekend install a 16:9 screen in place of my 4:3 - didn't realise there was an plastic pipe in th way but heatgun sorted that It works fine but stays in 4:3 format, although for a moment when I first plugged it in the screen formatted itself for 16:9 but then flicked back to 4:3. Any ideas on this? Caleb

Thanks so much for the info! Yes its a US BM53 but was told that you can change the region from the service menu. Do you have the parts numbers for the conversion cable? That online store 'bimmernav' sells a conversion cable but its really pricey at US$150. So with the nav, I take it I'll be replacing the connectors on my existing wiring? Are there any more detailed instructions out there detailing this? Caleb

Hi I've got a '99 740i from Japan and wanna get radio/nav working. Have already bought a '03+ bm53 & was looking for round to flat conversion cable. Now I'm wondering if I already have that radio module, any advice on this would be greatly appreciated. Also I take it I have to by mk3/4 nav module or does anyone have a list of part needed to upgrade from Japanese setup? Thanks in advance! Caleb