WasabiWarlord
Junior Member
I've inherited my dad's old 2014 Mustang 3.7L Premium, and I'm trying to return the audio system back to stock after a sketchy install my dad was fleeced $2500 out of for. I've removed everything to include the aftermarket amplifiers, head unit, dash kit w/ AC controls, and related wiring. I kept the aftermarket speakers and installed one of those generic Android head units. It works perfectly and even has a plug & play wiring harness, a major selling point for me.
To keep it short and sweet, I'm having trouble with the door & rear speakers. When I first start the car, they'll play at a low volume before cutting out, occasionally playing audio again very loudly and sometimes distortedly for a second before cutting out again. The problems become more frequent when the music is set at a higher volume.
Note: I'm not having issues with the OEM 8" subs in the doors.
Equipment Specs:
• Amplifier: OEM Premium/Shaker 500 (370w max) [P/N: DR3T18T806AF]
• Door Speakers: 6.5" Pioneer TS-A1687S (350w max, 80w RMS, 4ohms)
• Door Subs: 8" OEM (Dual voice coil, 60w x 2, 1.2ohm x 2)
• Rear Speakers: 6"x9" Pioneer TS-A6967S (450w max, 90w RMS, 4ohms)
Here's what I've done:
• I've tested the speakers with a multimeter and they seem fine
• I also tested a different pair of speakers but the problem remains
• I've tried a different head unit and wiring harness as well but nothing changed
• I've messed with the sound & EQ settings in the head unit too but that didn't help
Here are discrepancies I've found:
• The speakers were installed in reverse polarity. I removed the spliced wires and bought a proper adapter that plugs into the factory speaker plug (Metra 72-5601)
• 2 pairs of fuses were wired together in the fusebox found behind the passenger side kick panel. I removed the wires and replaced the fuses, 3 of which were blown. After this I noticed small electrical features worked again.
• Again on the passenger side kick panel, there's a connector that connects the dash wiring harness to the body wiring harness. There are a few wires that are spliced for some unknown reason.
• In the driver-side footwell, there's a connector with 3 pins that is hanging. I haven't found what it's supposed to connect to.
Images:
• Passenger-side kick panel fusebox • Passenger-side kick panel wiring harness • Driver-side hanging connector
Any advice or pointers towards the right direction would be greatly appreciated. I can provide audio clips of the speakers & images of anything if needed.
To keep it short and sweet, I'm having trouble with the door & rear speakers. When I first start the car, they'll play at a low volume before cutting out, occasionally playing audio again very loudly and sometimes distortedly for a second before cutting out again. The problems become more frequent when the music is set at a higher volume.
Note: I'm not having issues with the OEM 8" subs in the doors.
Equipment Specs:
• Amplifier: OEM Premium/Shaker 500 (370w max) [P/N: DR3T18T806AF]
• Door Speakers: 6.5" Pioneer TS-A1687S (350w max, 80w RMS, 4ohms)
• Door Subs: 8" OEM (Dual voice coil, 60w x 2, 1.2ohm x 2)
• Rear Speakers: 6"x9" Pioneer TS-A6967S (450w max, 90w RMS, 4ohms)
Here's what I've done:
• I've tested the speakers with a multimeter and they seem fine
• I also tested a different pair of speakers but the problem remains
• I've tried a different head unit and wiring harness as well but nothing changed
• I've messed with the sound & EQ settings in the head unit too but that didn't help
Here are discrepancies I've found:
• The speakers were installed in reverse polarity. I removed the spliced wires and bought a proper adapter that plugs into the factory speaker plug (Metra 72-5601)
• 2 pairs of fuses were wired together in the fusebox found behind the passenger side kick panel. I removed the wires and replaced the fuses, 3 of which were blown. After this I noticed small electrical features worked again.
• Again on the passenger side kick panel, there's a connector that connects the dash wiring harness to the body wiring harness. There are a few wires that are spliced for some unknown reason.
• In the driver-side footwell, there's a connector with 3 pins that is hanging. I haven't found what it's supposed to connect to.
Images:
• Passenger-side kick panel fusebox • Passenger-side kick panel wiring harness • Driver-side hanging connector
Any advice or pointers towards the right direction would be greatly appreciated. I can provide audio clips of the speakers & images of anything if needed.

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