Installing OBC stalk/ enabling OBC in 02 S

[Cloudsurfer]

I have an 02 S that was ordered without the On Board Computer. My previous understanding was that you could simply have the dealer turn on the OBV via the PST2 and it would then show outside temperature readout. I spoke to my dealer yesterday, who told me that worked on cars up to 01, but that the 02 and newer you also need to install the stalk.

I primarily just want the outside temp readout, but if I can have the whole OBC I suppose it is useful to have. Can anyone verify if this info is correct? If anything, I would think it would be up to 02 was one process, and 03 and up would be different, not up to 01 and 02 and newer being different.

Also, if I choose (or have to) install the stalk, how much of a PITA is this and what is the estimated cost?

Thanks

Patrick