This isn't a hard job, just a fiddly one. You should run power cables and signal wires seperately, so in this tutorial I'm only running the wire cable. The RCAs (signal wires from the head unit to the amp) will go down the drivers side in much the same way

You will need:
  • A hooking device (wire coat hanger)
  • A prodding device (wooden spoon)
  • 12mm spanner or rachet
  • Gaffa tape
  • Fuse holder
  • Torch


    • Before you start running your power cable you need to make sure you've added the in-line fuse holder. It's recommended that you put a fuse in the wire as close to the battery as possible. If a bad thing happens, like your power wire making contact with an earth point or electrical device, the extra power suck will blow the fuse and stop it sapping all the power out of the battery. So do it!
    There's 2 reasons to do it before you put the wire in. 1, it's easier. 2, by removing the fuse we don't have to worry about what the wire touchs. That one's important
    The usual place to get wires into the cabin in the FTO is a rubber grommit behind the battery. It's really tricky to get to, but managable. Pull it out and make a hole in the middle of it to poke the wire through. I drilled the hole with the Dremmel, but it wasn't easy, so see if you can some up with something easier. Make the hole JUST big enough, it should be very tight around the wire. Poke the opposite end from the fuse through. It's easier if there's no wire showing, which it probably won't be if it's new. Slide it down to the in-line fuse and now the fun bit can start
    Poke the wire through the hole. Try to keep the cable to the drivers side of the hole to avoid...something. Keep pushing as much wire as you can in until it just won't take any more and it just comes back out
    Now go to the passenger side. If you are lucky the wire will be piled up on the floor, but chances are it isn't. Open the glovebox and look for the bit of daylight. Shine the torch and see if any wire has made it close to where you can reach. This is where colourful wire helps! Get your hooking device and try and get hold of any piece you can. I found a squashed wire coat hanger was good because it couldn't easily escape the hook. Once you can get hold of a piece gently pull it through. Gently. Then go back outside and make sure you aren't about to drag a metal fuse holder up the front or side of your bodywork!
    Once the appropriate amount is left, slide the grommit up to the back of the engine bay and use your prodding device (wooden spooh handle for me) to push it back into place and make sure no water gets in
    You may want to stop at this point and connect your remote wire to the head unit so you can run them both in one job. (The remote wire runs a very small - 300ma - amount of power from the head unit to the amps to tell them to turn on. As it is transmitting power it is safe to run next to the main power cable)
    Pull off the scuff plate with a bit of brute force. Then remove the footwell scuff plate by undoing the bolt it the top corner (didn't have one, so don't know the size, prob 10mm) and pulling it off. It has 2 clips the same as the scuff plate. The carpet comes away by lifting the white hooks upwards
    Now start threading your cable(s) where you see fit. Avoid any bolts or scuff board connectors and tape the wires down to stop them moving or vibrating under heavy bass. That's the front done
    To remove the back seats the bottom comes out first. There is a ring one each side. Pull on these and you should be able to tilt the seat back and push the seat belt buckles through. To remove the back, undo the bolts on each side and lift it upwards. Now they are clear you can start planning where you want to run the cables. You can remove the side panel, but I found I could thread it through easy enough (compared to the engine bay anyway!) so didn't bother
    There are several routes into the boot from here, it depends on where your amp or fusebox will be. I went through the hole on the bottom right, up behind the boot trim and out the top, but that's just me!
    While you have the back seats, you might want to run your earth wire. The bolts holding the seat belt buckle in is a good point. Add a ring connector to the wire, undo the bolt and remove the buckle. Scrape away any paint so you have a good metal contact, put the ring over it and put the buckle back in. Make sure it's done up tight