Connect the external drive to MacOS. It should mount read-only. Start "System Information", clic on Hardware -> Storage, select your drive in the list and copy its UUID.
Another way to get the UUID is to use the diskutil CLI tool:
~$ diskutil list
~$ distutil info diskXsY
where diskXsY is the ID found with the list
command.
Start a terminal and open/create /etc/fstab
(you'll need root powers), and add:
UUID=<THE UUID YOU COPIED> none ntfs rw,auto,nobrowse
If the device does not appear on step 4., you can replace the UUID
by the partition LABEL
.
Unmount and remount the drive.
In Finder, press cmd-shift-g and type /Volumes/ in the popup. Press enter, and voila. You are on your drive.
If your drive does not appear, start the Console app and look for the NTFS log telling you the drive is unclean. If it exists, you must connect the harddrive to a windows PC and unmount it properly before this works.