Now that I've D/L the RAR files how do I convert them to a file for the Nuvi 1450? Do I end up with and img file or??? What directory ro they go into MAP or GARMIN or GPX? THX in advance. Be kind I'm a newby here.

See GarmanNuvi's post here:

post175115.html#p175115

Leo47GPS wrote:Now that I've D/L the RAR files how do I convert them to a file for the Nuvi 1450? Do I end up with and img file or??? What directory ro they go into MAP or GARMIN or GPX? THX in advance. Be kind I'm a newby here.

Welcome to the forum,Rar files are containers with a compressed version of the original files.No converting just unpacking
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As you didn't use the thumbs up button to say "Thanks" ,I'm not sure what you downloaded ,your device only uses NT maps and only uses the Junction view file .jcv(480 x 270) file and the map .img file

If you are updating out of date maps on the device it is a simple matter of replacing old for new in the .system folder (make a back up of the old)
It is possible your device will not have enough internal space to handle the latest maps so an SD card is needed

SD card(Formatted FAT32)
Garmin\JCV\************.jcv
Map\gmapsupp.img