Pretty much. Plug in to the seats, run the loom undre the little inner sill plastic panel and up behind the dash. You'll need to take out the clocks to wire it in. Partway up the loom should be 3 wires with plugs on end. Brown plug is earth, plugs in to a big round connector thingy on the A pillar but if it's cut just join it to any other earthing point. Behind and to the right of the clocks you should see a small block of different coloured connectors, your other two wires plug in here. Should be a black/white wire with green plug if I recall, plug in to the green one, this is your switched 12V. Blue/grey with blue connector goes in to the blue, this is your illumination.
Should all work as long as you have the relays and gubbins under the seats!
