Illumination dim control wire and light panel microphone

joshh1512 · Oct 25, 2017

Evening all,

I just got one of those android sat nav head units from ali express, it’s not the best to be honest had a lot of issues with it but trying to make the most out of it unless I can’t stanf it any longer lol.. anyway there’s two features which I’d like help with trying to include.

Both involve needing wiring diagrams which I can’t find anywhere online, maybe someone has a Haynes manual you could photograph for me?

1) I want to hook up the cars built in microphone rather than using the crap one they provided, where and what colours do the mic wires terminate, I’ll just splice and connect to the unit?

2) the unit comes with an “illumination wire” which is to control button LED brightness, the car has a dial switch next to the headlight control to dim all interior lighting, dash buttons etc. Which colour wire do I need from this control switch? I looked behind the OBD panel, and there are 5 wires going into the plug which is for illumination dimmer switch and headlight up/down control switch.

Thanks hope anyone can help!

propane94 · Oct 27, 2017

I am guessing your radio comes with an adapter to allow you to plug it into the original quadlock connector the factory radios connects to??

Look at the pin diagram for the microphone pin, you could then use that along with the signal ground to get the microphone signal.

As for the illumination wire, you need to check if it accepts an analogue or digital signal. What most aftermarket radios expect is either 12v or ground to that wire when you turn the lights on (sidelights, headlights etc.). You can test this by grounding the wire and see if the buttons dim (there might be settings within the radio you need to use for this). If so, you will need to wire a circuit up to the headlight switch and connect your illumination wire to that. The light signal is sent to the factory unit via canbus, so you would need a canbus decoder to interpret this if you don't want to connect it to the headlight switch.

joshh1512 · Nov 8, 2017

Hi sorry for delay in reply been scrawling the net to find info on the quad lock wiring layout...

Yes it comes with a quad lock adapter, though the mic is not connected as they provide a separate one, but i'd rather not put an external mic in if i've got one neat and tidy in the roof.

All i've found on this forum is

i49.tinypic.com/73iemw.jpg

Which i assume will be the same as my radio.. there are 5 options for the 'phone' which i'm not even sure if this is the mic? NFR and NFL positive and negative, not sure what these are though so which would i splice my head unit mic wire into?

The head unit came with a can bus decoder module, although not sure if that would be on the same circuit as the illumination wire it came with. To ground it, you literally mean to crimp a wire to the illumination wire at the back of the unit, and just touch the other to bare metal? The dimming control only affects the interior lighting, why would i connect to the headlight wire?

for reference this is the back of my head unit with socket layouts..

ae01.alicdn.com/kf/HTB1Z6.WlrsTMeJjy1zeq6AOCVXaD.jpg?size=180983&height=1028&width=980&hash=1697203e550da8ecea395477dec5db84

illumination is wire 23.

Thanks for your help!

P.S sorry not enough posts to put actual photos/hyperlinks! just copy and paste into address bar, should work.

propane94 · Nov 14, 2017

See if it has a mic built into the unit, mine did and makes it much easier. I don't know which wire it would be to use i'm afraid as I used the built in mic. I think NFR and NFL are right and left audio out for the phone. Best bet is when you swap yours, check the back of yours and see.

Again, I would suspect the can bus may have an illumination wire, most do. It seems they are all connected so there might be a setting on the unit. If not, more or less yes. When the wire is grounded, it should trigger the illumination. This is to light up the buttons and in some cases dim the screen for darker driving. Check before you connect permanently what this does. I say connect to the headlight because this is usually a toggle, not a dimmable connection. Either on or off. Again you will need to check either by looking at the manual or testing it yourself.

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Illumination dim control wire and light panel microphone

joshh1512

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propane94

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joshh1512

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propane94

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