The issue you're describing with your Nakamichi NA6605 head unit muting itself after installing new Infinity speakers could be caused by a few different factors. Let's go through some troubleshooting steps to help pinpoint the problem:
1. **Impedance Mismatch:** You mentioned that you replaced the factory speakers with Infinity 6x8 REF-8632cfx speakers. These Infinity speakers have an impedance of 3 ohms, while the original speakers were likely 4 ohms. This difference in impedance could potentially cause issues with the head unit's output stage. Some head units are designed to handle a specific range of speaker impedances. Make sure the Nakamichi unit is compatible with 3-ohm speakers. If it's not, this impedance mismatch could indeed lead to the behavior you're experiencing.
2. **Wiring and Connections:** Double-check all your wiring connections. Make sure that the speaker wires are properly connected and that there are no loose or exposed wires that could be causing a short circuit. Incorrect wiring can cause the head unit to detect a fault and enter mute mode.
3. **Power Supply and Ground:** Ensure that the head unit is receiving a stable power supply and that the ground connection is solid. Voltage drops or poor grounding can lead to unstable operation.
4. **Short Circuit Protection:** Many modern head units have built-in protection mechanisms that detect short circuits or incorrect impedances. If the head unit detects a problem, it might enter mute mode to prevent damage. Check the head unit's user manual to see if it has any relevant protection features.
5. **Head Unit Settings:** Check the Nakamichi unit's settings, especially those related to speaker impedance or output settings. Some head units allow you to adjust output settings based on the connected speakers.
6. **Firmware Update:** If there's a firmware update available for your Nakamichi head unit, consider updating it. Firmware updates can sometimes resolve compatibility issues.
7. **Test the Speakers:** To rule out the possibility of a faulty speaker causing the issue, you can temporarily disconnect the Infinity speakers and see if the head unit behaves differently.
8. **Professional Inspection:** If none of the above steps resolve the issue, it might be best to seek the assistance of a professional car audio installer or technician. They have the expertise and tools to diagnose and address complex issues with car audio systems.
Remember, electrical issues in car audio systems can be complex and require a methodical approach to troubleshooting. If you're not comfortable diagnosing the issue yourself, it's best to seek professional assistance to ensure a safe and accurate resolution.
You can buy an aftermarket radio harness adapter for your Navigator from ebay quite cheaply. I would not recommend butchering the factory wiring to install a replacement head unit. I found this one (will work as long as your Lincoln wasn't fitted with SATNAV) -
Lincoln Radio WIRE HARNESS INSTALL STEREO PLUG 2003 09 eBay
It’s a ground, if your amp still won’t turn on after u finished installing Then use brown one as a ground and ground it to the same one as your amplifier.
I tried to recategorize this question to get it into a more probable area to get a response but found that there just isn't anything suited for this question. I would try some forums that have more specialized and probable answers to this. There's a ton of information if you locate the places that discuss these topics. Or even try ebay, there's a good chance you could find exactly what you need there or even have the question answered by a seller for free. It never hurts to ask nicely.
The actual aerial normally a single plug with a pointy end on it which plugs into the back of the radio.If the 2 leads red and green are separate wires they sound like the power to release the aerial for semi auto pop up aerial or motor drive if it has motor attached.Depending on your radio the aerial will operate when turned on ,if not then for radio aerial with motor you will have to fit a 2 way switch
Unfortunately, no one knows or is telling. Companies rarely state power in RMS because Peak Power is a much more impressive. 1000 watt amp, 200 watts RMS x 2 channels at 8 ohms. Look for a sticker on the unit.
https://www.google.com/search?q=Xplore+Amp+5553
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The wiring is bad on the plugs and shorting out, or whatever is on the end of the cable has an issue. Also look along the cable for rodent, cat, dog chewing.
Questions like this need 'make model (what is is) of every item involved. On a vehicle 'year make model' as well.
The bad ground causes the amplifier to go into the protect mode. So, make sure to check the grounding wire and overall connection to figure it out and set back the amplifier to its normal mode.
Feb 15, 2023
