Metra Popular Questions, Answers, Tips & Manuals

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.

is radio comparable with the vehicle and or has it been hooked up correctly

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.

Maybe burnt out bulbs,,, ck here for replacement.... https://www.youtube.com/watch?v=ChM3Oz-naDY

You need to make sure the amp turn on lead is connected... its blue with a white stripe

DISCONNECT BATTERY AND RE CONNECT

The blue lead does not go to negative. It needs to go to the power antenna wire from your radio. If you have an aftermarket radio, then this would be a solid blue wire from the aftermarket radio harness, that should be connected to the matching blue wire in your other store bought Toyota harness that it mates to. Then this plugs into the OEM harness that is part of your truck wiring. You can confirm that the blue wire at your power antenna is the one that triggers the motor by briefly touching it to the power wire (red) and watching your antenna begin to rise up. Remove the blue wire from power, and it should descend. If you need further help, I’m available over the phone at https://www.6ya.com/expert/reginald_bec291de192ca44f

U can adjust the head lights up. Talk to the dealer if new. Make them adjust them. Or go to a auto repair shop. Some may do it for free

i am thinking that the engine was close to overheating when you switched it off and when you turned it back on the ECM put it in limp mode to protect the engine run the fault codes

Turn your lights on. If they don't come on get a jump to start and check voltage at battery when running. It should read 14+V. If you have a charged battery, then the starter/starter connections as well as the battery connections should be checked and should be tight (no movement on the battery connections). hope this helps. Bill

Might be a fuse. Locate the fuse panel box under the dash or the fuse box under the hood located on either side fender well. Has a clip to hold cover on. Unclip it and read the fuse locations and check them. Relays are also in either fuse/relay location.

Venom was a product line from directed electronics inc. I would suggest contacting them as they could advise what model keypad would work as well as if they have any available anymore.

Does then engine show any codes? some auto part stores will check your vehicle for no charge.

OK

1. google your make modal and year as well as wiper switch wiring diagram
2. when page opens look across the top and click on images
3. when the page opens Pick your wiring diagram and click on it.
4. when open click on visit page.
5. and there it is

Mike

Check the ground in the trunk...

Requires Requires a scan tool with airbag capabilities. However if the fault that caused the light initially is corrected it should reset iyself. If the fault still exists the light will come right back on.

Hi Anonymous. Systems like brake and tail lights are pretty much always serviced by separate fuses, so that one bulb blowing or shorting and blowing a fuse doesn't take all of the other tail lights with it. For things like headlights, the high and low beam filaments on either side will also have separate filaments, so that one filament burning out doesn't take the whole headlight out. The first place to look is in your fuse box(es). the owners manual, or the lid of the panel, will have a layout of the fuses and which one is which. Check the fuses for those lights and see if they're blown. Along the same lines... the lights could be out because the bulbs are burned out. if the fuses aren't blown, consider next removing the bulbs and checking for continuity. Hoping this helps! D

check your bearings, ball joints and tie rods.

undo the pipe from the exhaust manifold flange fitting