Coin door light wiring help

[Firepro4Life]

So I am trying to wire up some 12v coin door lights to the power supply of my 60-in-1 nd I am having a little trouble. I bought this harness from the link below rather than make my own and connected it to the power supply, but for some reason the bulbs won't light. I tried connecting various connection combinations of the power and ground and got one bulb to light, so I know it's receiving power, but I can't seem to get both to light. The harness has 14 connectors...are there are particular ones I should be connecting to the bulbs? I didnt think it mattered if all 14 are not used, but what do i know. Sorry if this is a noobish question and any help is greatly appreciated.

http://groovygamegear.com/webstore/index.php?main_page=product_info&cPath=66&products_id=385

[DaOld Man]

I cant get your link to open.
Are the lights LEDs? If so, try switching the wires on them (polarity matters with an LED).

[Firepro4Life]

Fixed link. Yes, they are LEDs. I'll try switch around the wires and see if that works.

[Firepro4Life]

Yep, just had to switch the 12v and ground connectors. Thanks, otherwise I'd still be staring at wires dumbfounded.