How do you fit a heater matrix in a peugeot 205?

To fit a heater matrix in a Peugeot 205, first, disconnect the battery and remove the dashboard for access. Drain the cooling system, then disconnect the hoses from the old heater matrix and remove any securing clips or screws. Carefully remove the old matrix from its housing and replace it with the new one, ensuring a proper seal, then reassemble the dashboard and reconnect everything. Finally, refill the cooling system and check for leaks.