To remove the instrument panel on a Challenger model, first disconnect the cable from the negative terminal of the battery. Next, remove the center console, glove box, and steering column. Detach the A-pillar trim panels by prying the top away from the pillar, disconnecting the roof rail airbag electrical connector, and then removing the trim. Carefully pry up the defroster grille panel and detach it from the instrument panel. Unplug the electrical connectors at the bottom of each A-pillar, then remove the driver's knee bolster. Disconnect the electrical connectors under each end of the instrument panel, and remove the floor air duct along with the bolts from the instrument panel center brackets. Take out the two bolts from the forward edge of the instrument panel on the left side, followed by the screws from the center and right forward edge. Remove the instrument panel mounting bolts from each end, and with assistance, lift the instrument panel off the support hooks, ensuring nothing is still attached, and guide it out of the vehicle. Installation follows the reverse order of removal.