Stu
I took the passenger and lower rear seat out, not always nessesary but makes instal easier IMHO.
I then routed the amp power direct from the battery and down the nearside of the car along the side of the car and then under the rear seat and made a hole through the boot bulkhead.
I then ran three sets of phono (line out) leads (front rear and sub). You may not be using all three sets but it saves so much time later if you do want to instal a sub.
I then routed the front drivers side speaker wire down that side of the car and the passenger one under the carpet on the passenger side but away from the power and phono leads. These again went under the rear seat and through another hole made in the bulkhead.
Then BEFORE you refit the seats and carpets connect everything up and run the stereo with the engine running and check for ignition whine.
Here are the pics for the amp wire route:-
Connect to battery Route through the engine bay gromett Exit from engine bay and into car A... wing need to be removed to gain access) Entry point into the car, carpet need to be pulled back to see this hole.Good luck
JOhn