GPSN Pro Micro Camera GPS Tracker Receiver For Nikon D800/D3200/DS90/DA7100/ D5200, D4/DF600/FD5100,D7000/DD300/S With From Goodgo, $84.49 | DHgate.Com
Gps Receiver Nikon | Receiver Navigation | Camera Gps Tracker | Gps Nikon Camera - Gps-n - Aliexpress
GPS Receiver Module For Nikon Cameras, Geotagging Unit Compatible With D800, D800E, D610, D600, D7200, D700, D7100, D90, D3200, D5200, D4 From Goodgo, $100.34 | DHgate.Com
Yes, you can use 12V as input for a Nikon D3200 : r/Nikon