theres not much way to tell on these what the polarity is so i checked with my batt charger before i started soldering and this is what i came up with... dunno if you can make it out real well but the side with the most metal is neg like this:

pRS1C-4724929w345.jpg

i took the neg side and folded it down to solder to board and left the posotive side up to atach resistor to