Take a picture of the light's wire setup. I tried looking for info or a video, but found nothing on the install - I went to the website and found this:
•Use less power and emits almost no heat
•Are resistant to vibration and shock - better for off road
•Offers superior brightness
•All D.O.T. compliant to FMVSS-108
•OEM Style weather tight connections and wire harnessess
•Simply plug and play
I got the Longo led's set so I'm not sure if I can help you or not. My set pluged in to the wiring harness that comes with car already, right where the old light blub went. I just had to remove the wiring harness from the the OEM lights (there's a little clip there to hold the wire in place). Do you have two plugs comming out new light that look like the bottom of tail light blub?
The other thing to keep in mind is that white wire on the OEM harness is the ground and most likely line up with the black wire on your new set of lights. So if you don't get your lights to work after you plug it all togetther just trun the the plug over and replug it together in the same slot.