Spot on Jaques.
That is the correct connector.
I'm suprised that the loom hat comes with your GPS doesn't have an in-line fuse incorporated!
Irrespectively you can quite easily pick up an in-line fuse from somewhere like Halfords and install it in-line with the red / brown cable.
You should be able to get a selection of suitable fuses. My Garmin came with one already installed so I haven't got a clue what size it is.
I got fed up of looking for a matching connector so just chopped the one you have identified off and soldered the wires together and then wrapped in insulation tape. It's been like that for years now with no problems.

Hope this helps SteveD

__________________
If I'm not working, I'll be