on the solenoids... one of them has two black wires coming out of it and the other one has two red wires coming out of it... when i look at the wiring schematic it shows that i have to ground each solenoid and give power to each solenoid. how do i do that? how do u know which one of the black/black or red/red to ground and give power too since there both the same color?

 

it doesnt matter which is which. pick one and ground it, pick the other and give it power. if it mattered, they would color code it.