Hey mate. It's a rather simple job. The interior panel that has the cup holders in it. That pops out, a plastic trim tool will help. Under that you will see a 10mm nut on the cable going to the HB lever. Tighten that up until you have a suitable tension on the cable - I can't remember if it has a double nut setup, if it does hold the bottom nut with a spanner then crack the top nut off and use the bottom one to tension the cable. It's worthwhile checking the rear brake pads too as the handbrake just operates the caliper.
