Your constant 12V (Yellow wire) and switched 12V (Red wire) are reversed. Swap these two wires on your harness. The Yellow needs always-on power.
Based on hundreds of user reports and the original troubleshooting section of the manual, here are solutions to the top 5 problems. blaupunkt 1804bt manual
If you need to download the Blaupunkt 1804BT manual or require additional resources, you can visit the Blaupunkt website or check online marketplaces like Amazon. You can also contact Blaupunkt customer support for assistance. Your constant 12V (Yellow wire) and switched 12V
: Ensure the Mute function is off and check speaker wire connections. blaupunkt 1804bt manual
