okay so im kinda confused about how to do this, if i buy a 2 speaker Amp wiring kit will i have everything i need to install it?

Also im guessing that i get some of those a/v cords (i know they arent audio/video but thats the closest kind of connector that i know, and they have the same shape) and run those from the pre-amp outputs coming out the back of my head unit. then just connect the subs to leads and run the leads to the amp right?

its got 2 built in 20a fuses as well, but do i need to put anymore aslo where to i find a +12V power lead, also i know how to ground it, just run a lead to the frame and bolt the bitch on there.

also there are two places to connect the pre-amp outputs one says high-input and one says low-input, the low input is the same conenction as the outputs on my headunit, but what about the high-input, is that for speakers? it has leads coming out of a connector