i have a 4 channel amps that im putting in the car. how do i wire this? do i put channel 1&2 in the back speakers together, or on one side of the car?

this amp for the component speakers is totally seperate from the sub's amp right?

 

If you are using this Amp only for the components, then YES it's seperate from the Sub Amp. As for putting which channel to which speaker, I normally put Ch.1 to L. Front, Ch.2 to R. Front, Ch.3 to L. Rear, Ch.4 to R. Rear. Hope this helps

 

i put ch1 back right and 2 back left and so on. will it still sound right? if i need to change it nows the time since the interior is still out.

 

No you don't have to change it, the way I showed I normally do it is just my preference. The way you are doing the wiring is fine.