The Honda Odyssey features many options regarding the audio system. For car stereo enthusiasts, the methods for upgrading their audio systems will be found via aftermarket components. The entirety of the Honda's system can be augmented with more powerful, more efficient and more durable products, from audio decks and speakers to improved wiring and amplification. Instead of entrusting the task of upgrading your Honda Odyssey's audio system to an audio technician, do it yourself and save the cost of labor.
Disconnect the negative battery cable clamp from the negative lead post of the battery with a 10 mm wrench. Rest the clamp away from the battery until your work is finished.
Connect a ring terminal from the amplifier wiring kit to the positive lead on the battery. Route the power cable from the ring terminal to the inside of the cabin. There is an opening near the battery, on the firewall of the engine compartment, to access the inner cabin.
Remove the stereo from the dash. Pull the wiring from the rear of the stereo. Connect the stereo wiring to a wiring harness adapter.
Connect the wiring harness adapter leads to a new stereo deck. Connect the turn-on lead and signal cable from the amp wiring kit to the wiring harness adapter. Feed the turn-on lead and signal cable through the back of the stereo mounting bracket to the floor of the Honda.
Replace the stereo into the dash of the Honda.
Lift the carpeting on both sides of the vehicle with a trim panel removal tool. The panels at the door openings can be lifted to provide access to the floor beneath the carpeting.
Route the cables from the stereo beneath the carpeting to the rear cargo area of the Odyssey. Route the power supply cable that has been fed through the firewall, along the other side of the vehicle (beneath the carpeting) to the rear cargo area.
Replace the trim panels at the doorways to secure the carpeting.
Place the amplifier and subwoofer in the rear cargo area of the Honda. Connect the turn-on lead, signal cable and power supply cable to the amplifier.
Connect the amplifier to the subwoofer using speaker wire. The negative output on the amp connects with the negative input on the sub. The positive output on the amplifier connects with the positive input on the subwoofer.
Connect the grounding wire (from the amp wiring kit) to the amplifier. Connect the grounding wire to a bolt in the rear cargo area of the van. Any bolt connected directly to the frame of the vehicle will suffice for grounding.
Remove the speaker cover grilles on the doors with flat screwdriver. Remove the three screws that hold the speakers in their mounting docks with a Phillips-head screwdriver.
Pull the speakers from their docks. Disconnect the speaker wiring at the back of the speakers. Attach a speaker wiring harness to the speaker wiring from the vehicle. Connect the speaker harness adapters to the speakers.
Place the new speakers into the speaker docks. Screw in the screws from the factory speakers to secure the new speakers. Replace the grille covers by hand.
Place the negative battery cable clamp around the negative battery lead. Tighten the cable's clamp with the 10 mm wrench.
