I have some questions about wiring a USB connection into my F150 fuse box.
Objective: Wire a USB connection into fuse box (with appropriate cable length) that I can plug a dash cam into.
Can I use a fuse tap like this (assuming I get right one for an F150 fuse box) to connect a 12V to 5V USB converter?
Fuse Tap

12V to 5V converter - Does the black wire need to be grounded? I'm a moron at wiring mostly. Any advice appreciated.

I found a very similar set-up on F150forums.com, but this guy made his own USB connection by soldering. Would prefer to buy a converter online if possible.
EDIT: LINK - http://www.f150forum.com/f38/dashcam-installation-review-pics-video-257255/
[This message has been edited by 3rdCoastAg (edited 6/4/2014 1:58p).]
Objective: Wire a USB connection into fuse box (with appropriate cable length) that I can plug a dash cam into.
Can I use a fuse tap like this (assuming I get right one for an F150 fuse box) to connect a 12V to 5V USB converter?
Fuse Tap

12V to 5V converter - Does the black wire need to be grounded? I'm a moron at wiring mostly. Any advice appreciated.

I found a very similar set-up on F150forums.com, but this guy made his own USB connection by soldering. Would prefer to buy a converter online if possible.
EDIT: LINK - http://www.f150forum.com/f38/dashcam-installation-review-pics-video-257255/
[This message has been edited by 3rdCoastAg (edited 6/4/2014 1:58p).]