http://www.toyotanation.com/forum/showt ... adid=13159
http://www.bcae1.com/amplfier.htm (scroll down like 3/4 of the way down)
To power two amps, you are going to use a distrubution block.
http://www.knukonceptz.com/productDetai ... ID=BC-1428
Run 4 gauge fromt the battery to an inline fuse holder like this one
http://www.knukonceptz.com/productDetai ... odID=FH-24
Then run 4 gauge wire from the inline fuse holder, through the rubber grommet in the firewall, near the master cylinder. from the inside of the firewall, run the power wire under the carpet. You can run it alongside the door sills, then under the back seat into the trunk. Once the power wire is routed to the trunk. Use the distribution block to separate the power to 2 8 gauge power wires, each one to an amp.
If you are going with a high power system 150 Watts RMS x2 for the components and 500 + watts rms for the sub, then you might want to go with 0/1 gauge power wire from the battery to the inline fuse holder. You'll need a larger ANL fuse inline fuse holder like this one.
http://www.knukonceptz.com/productDetai ... -20B%20ANL
You'll also need a 0/1 gauge to (2) 4 gauge. Like this one.
http://www.knukonceptz.com/productDetai ... D=FB-1024D
Use 4 gauge for the ground wire on each amp.
When mounting the box make sure you are mounting it to a panel of MDF wood. 3/4" preffered if possible. You can make a false floor to house the two amplifiers and have a built in cooling system. This is a whole nother thread for this.
The easiest way to do it is to get a sheet of 3/4" MDF wood and make a panel that will hold the two amps. Then get some L mounting brackets to secure it to the floor of the trunk.