Gauge cluster a pain in the ....

I just finished putting in some NuImage Platinum gauge faces in my '00 Taco and let me tell you, that sucked. It's a huge pain the ass to get in there and do all that. I guess now having done it I could do it a whole lot quicker and whatnot, but still, not fun.

I've figured out everything but where the positive and negative/ground wires are suppose to go... I ordered the instrument panel online, and the instructions are useless. All the instructions say is to "splice" the wires into the headlight's positive and ground....I've got everything taken apart, and there's about eight wires with all different colors (coming from under the steering wheel) and two from the aftermarket panel (one red and one black) ....I know red is usually positive and green-ground....but there's like three reds - red/white red/green, which is positive??? Where does the other wire go??? Thanks for the help!!!