Mono Business nav upgrade

[gad-westy]

Hi all, your forum was linked by a member on E46 Zone and it seems to me that you have an awful lot of combined knowledge on BMW nav systems.

I'll run through my quandary and see what you think. At the weekend I bought a 2000 330i Touring. Car is great other than that it has the old style business navigation unit. Since then I have been researching what my options are for changing it. My original plan was just to swap it for BMW Business CD player that I could feed an aux-in into and also add bluetooth. It seems that is a non-starter as the wiring is completely different. somebody on E46 zone has suggested that I may have the same wiring in place for a straight swap to a 16:9 screen. This would be good as it would open up a few new options and bring the interior up to date. I have a million questions on this subject but I'll try and keep it simple to start with...

Firstly the kit I currently have in the rear of the car is a BMW tuner and a MK3 Nav computer.

Will my current head unit have the same connectors behind it as the 16:9 screen?

If not, is an adaptor available?

I'm assuming that the nav computer will need to be reconfigured to mono? This is where I really get confused. It sounds a very technical process and I'm not 100% sure what is involved. I'm wondering if I would be better simply buying a nav computer that is already colour and sell the old one? If it's any use, the part no of my current unit ends with 908-529 and was manufactured in July 2000.

And lastly (for now!), if this all looks viable, what should I be looking for regarding 16:9 screens? I understand not all of them have facility for aux in? Otherwise, should they all work in the same manner?

Thanks in advance.