You gotta run mains from your battery to your amp...easy enough. As for your remote,under the right hand side of your dash there are 3 plugs,a yellow,a white and a blue plug;the blue plug is the one you want.You get a multimeter,set it to dc volts...check each of the four pins,checking them with your key on "accessories"but also check with key in off pozzi. one pin will give you zero,another will give you around 5 volts,the third will give you 12 volts with key either on or off....the last will give you 12 volts with the key turned to "accessories"...and that's your pin.You then crimp a tongue lug or "male" lug onto your remote wire,bob's your uncle. In terms of signal,easy;grab a converter from your local car audio shop,then parallell your rear speaker wires to that unit,then from that unit..your 2 rca's will go straight into your amp. Then job done,good luck (I've recently done this to my ute). Just remember to situate your mains fuse as close to your battery as possible to protect your mains cable.