After hooking up all the wires that the new stereo needed I have four smaller wires left over.
The stereo powers up fine and operates normally except I have no sound at my speakers.
I spoke with a few people that said some BMWs come with an Amp already installed and it needs to be turned on.
I'm assuming the old stereo sent the signal to the amp to turn it on.
I found the amplifier in the trunk of my car and located the connector on the aft side of the amp.
does anyone know what type of signal (voltage or ground or other) that it needs to turn on?
I found a stereo wire harness that said it was a "Amplifier Integration Harness" for use with the BMW. Does that actually turn on the Amp?
METRA 70-1786 AMP INTEGRATION HARNESS FOR 1991-2004 MERCEDEZ-BENZ & LAND ROVER, METRA 70-1857 17 FT TUNER BYPASS & BOSE AMP INTEGRATION HARNESS FOR GM VEHICLES, METRA 70-5518 2003 FORD TREMOR CAR AMP AMPLIFIER INTEGRATION WIRE WIRING HARNESS, METRA 70-5519 LINCOLN / FORD MUSTANG CAR AMP AMPLIFIER INTEGRATION WIRE HARNESS, METRA 70-5519 LINCOLN / FORD MUSTANG CAR AMP AMPLIFIER INTEGRATION WIRE HARNESS, METRA 70-5518 2003 FORD TREMOR CAR AMP AMPLIFIER INTEGRATION WIRE WIRING HARNESS, 92 TO 1999 TOYOTA LEXUS AMP INTEGRATION HARNESS TOY4960, LEXUS 99 -UP AMPLIFIER AMP INTEGRATION HARNESS 70-8113, FORD 96- 98 AMP INTEGRATION HARNESS PRE AMP FD4596 5603, METRA 70-7552 NISSAN 2007-UP CAR AMPLIFIER/AMP WIRE INTEGRATION HARNESS KIT GXL, METRA 70-7552 NISSAN 2007-UP CAR AMPLIFIER/AMP WIRE INTEGRATION HARNESS KIT GXL, Metra 70-7553 Amplifier/Amp Integration Harness for Select Nissan Vehicles, METRA 70-8113 TOYOTA 2000 & UP PREMIUM SOUND SYSTEM AMP INTEGRATION WIRE HARNESS, LOT of 10 - Wire Harness, Integration device, amp to factory + more!, Metra 70-1786 1991-2004 Land Rover Amplifier/Amp Integration Wiring Harness, METRA 70-5518 2003 FORD TREMOR CAR AMP AMPLIFIER INTEGRATION WIRE WIRING HARNESS, Metra Ford 98-08 Amp Integration Car Stereo Wire Harness 70-5519, NEW METRA GMOS-LAN-04 GM 06-UP LAN HARNESS W/ ONSTAR AMP INTEGRATION, METRA 70-5519 LINCOLN / FORD MUSTANG CAR AMP AMPLIFIER INTEGRATION WIRE HARNESS, BMW AMP INTEGRATION HARNESS 3/7SER M M3 Z3 70-8591 4470, Metra 70-5511 Radio Wiring Harness FD Amp Integration System, LAND ROVER AMP INTEGRATION HARNESS 1991-1999, CHRYSLER AMP INTEGRATION WIRING HARNESS, ★PREMIUM SOUND SYSTEM W AMP INTEGRATION CAR STEREO RADIO FACTORY WIRING HARNESS★, Metra 70-5510 (met-705510) Factory Amplifier/Amp Integration Wiring Harness, Metra 70-8113 Radio Wiring Harness for Toyota Amp Integration 20 Pin , Metra 70-8113 2000-2004 Toyota/Lexus Car Amplifier/Amp Integration Wire Harness, 2002 - UP JEEP AMP INTEGRATION HARNESS w/ RCA CHR4644, VW AUDI AMP INTEGRATION HARNESS BOSE PLUG METRA 70-1787, 2002 - UP DODGE AMP INTEGRATION HARNESS w/ RCA CHR4644, 2002 -UP PLYMOUTH AMP INTEGRATION HARNESS w/RCA CHR4644, 03 -UP LINCOLN AMP INTEGRATION HARNESS 8PIN+RCA fd45520, LINCOLN 96 - 98 INTEGRATION HARNESS PRE AMP FD4596 5603, MERCURY 96 - 98 INTEGRATION HARNESS PRE AMP FD4596 5603, METRA 70-7552 NISSAN 2007-UP CAR AMPLIFIER/AMP WIRE INTEGRATION HARNESS KIT GXL, METRA 70-5603 SELECT FORD VEHICLES 1986-1998 LOW LEVEL AMP INTEGRATION HARNESS , METRA 70-8113 2002-UP LEXUS/TOYOTA AMP AMPLIFIER INTEGRATION WIRE HARNESS CABLES, METRA 70-5521 FORD 2003-2005 AMP INTEGRATION HARNESS, METRA 70-5519 SELECT FORD/LINCOLN 1998-2006 AMP INTEGRATION HARNESS , TOYOTA 92to99 AMPLIFIER AMP INTEGRATION HARNESS 70-8112, TOYOTA 99 -UP AMPLIFIER AMP INTEGRATION HARNESS 70-8113, METRA 70-7003 MITSUBISHI DODGE STEALTH AMP AMPLIFIER INTEGRATION HARNESS 70-7001, Metra 70-9002 Select 1987-2001 Volkswagen Wiring Harness w/ Amp Integration Plug, METRA 70-1787 AUDI/VW BOSE INTEGRATION INSTALLATION WIRE HARNESS BY-PASS AMP, Metra 70-8113 Car Radio Wiring Harness for Toyota Amp Integration 20 Pin 12 inch, NISSAN INFINITY 95-UP AMP INTEGRATION HARNESS 70-7551, METRA 70-8113 2002-UP LEXUS/TOYOTA AMP AMPLIFIER INTEGRATION WIRE HARNESS CABLES, METRA 70-7003 MITSUBISHI DODGE STEALTH AMP AMPLIFIER INTEGRATION HARNESS 70-7001, METRA 70-7003 MITSUBISHI DODGE STEALTH AMP AMPLIFIER INTEGRATION HARNESS 70-7001, 2003 - UP FORD AMP INTEGRATION HARNESS 8PIN+RCA fd45520,