Hi,   I replaced my stock Audience MP3 player with Chinese Android player and as posted by others even i didn't had sound from speaker.   Stock AMP does not work with after market HU because its control module is built inside stock Radio. Now the only option to get sound is connect stock radio parallel to after market HU (got this idea from a YouTube video)   Now the question arises how to connect and where to keep stock radio..   You don't need to to connect all wires to stock radio.. j