Upgrading the speakers in your vehicle means replacing the existing speakers—certainly the case with the Nissan Frontier pickup truck. The Frontier comes equipped with factory-installed speakers in the front doors and dashboard. You can access these speakers by removing grilles or door panels, taking out the old speakers and mounting new ones in their place. You can do this job with hand tools; if you budget an afternoon, you shouldn’t have any trouble completing the job.
Items you will need: Panel tool, Phillips screwdriver
Step 1 – Pry out the grille covering the speaker on the passenger side of the dash by inserting the tip of a panel tool under the edge and levering upward.