I ran into this problem recently, after getting support from seller.. either wire can be hooked up to the + /- of power cord.
__________________
|2x55gReefs|2x175wMH|4x65wPC|2x54wT5|8x3wCREE|Lunars
Fish:|fire clown|strawberry & gold chromis|6line|mandarin|
Current Tank Info: Two 55g Reef Tanks
|