
You remove battery and unbolt the bracket it goes on.Join the new cable to the old battery terminal and wrap loads of insulating tape around it to keep it from getting damp/coming in contact with metal.Thread the cable through a grommet by the abs unit the welding rod makes this easier as you push it through with the cable on the end.It comes out in the passenger footwell.All the trim comes off really easily and you run it behind the carpet,under the sill guard,under the foam rear seat and straight into the boot.Connect a terminal to the end of the cable and that's that sorted.
For the earth,I bought a ready made one for about a fiver,drilled the boot floor,cleaned it up with sandpaper,put vaseline on(Vpulsar will have loads of this)to keep it free of moisture and a good connecton and bolted it on.I may improve this at a later date and bolt it to the chassis but I've had it checked for resistance and it was fine.
The battery box neeeds to be securely mounted to pass the MOT so 2 or 3 bolts does it easy.I then waxoyled all the nuts and bolts showing under the boot floor to stop it rusting.