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Old 03-05-2013, 04:53 PM   #1
opies
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Aftermarket stereo illumination

Has anyone successfully gotten their aftermarket stereo to function as intended based on the headlights being on or off? I have the FRST2 hooked up and apparently it does not send a signal to a Pioneer avic x940 to tell it whether the lights are on or off. I would love for it to trigger the automatic dimmer and night/day feature on the nav screen.


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Old 03-05-2013, 05:19 PM   #2
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unfortunately that works in very few cars. most don't send the proper signal for it to work right. I installed at best buy for several years and we never used it. couldn't promise the customer it would work properly so we didn't bother with them.
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Old 03-05-2013, 05:29 PM   #3
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Yeah, I have never, ever, gotten one to work correctly.

I wonder if it is possible to tap the decks illumination wire into the stock headlamp circuit to make it functional?
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Old 03-05-2013, 05:32 PM   #4
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would depend what trigger the headunit is looking for and if it have a voltage limit for it. if you can provide the correct signal then i'm sure we can find a way to make it work. i'll see if i can find the owners manual for your unit online tomorrow and look in to it.
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Old 03-05-2013, 05:38 PM   #5
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One would think its just a ground switch, like the parking brake wire. Just need to tell the unit the lights are on so it will automatically dim. Are the stock panels back lights always on? I never thought to look.

Here is the manual...

http://www.pioneerelectronics.com/St...nual030212.pdf
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Old 03-06-2013, 06:35 AM   #6
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Never mind. I misread your question. It sounds like Kipp has you pretty much covered.

One thing I will say is that to get my headunit (Pioneer DEH-P3500) to dim with the headlights, all I needed to do was wire the elimination input from the car into the elimination wire from the headunit. Io don't know how your radios wiring pigtails and the cars wiring harnesses are set up but I assume it will be something similar.
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Old 03-06-2013, 06:59 AM   #7
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well neither that manual or the install manual have the info I was looking for. was trying to see what that illumination trigger needed to work. It should just need to see either a ground or possitive input for it to change; i'm just not sure which one. if all it wants is just a trigger and not a dimming input then you can use either the illumination wire or a parking light wire. you may need a relay though to change it to the correct trigger to work. Did your car come with sync? If not then the ill wire at the headunit should work, but if it had sync then looks like it's a data wire and you'll have to go to the parking light.
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Old 03-06-2013, 07:15 AM   #8
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Quote:
Originally Posted by 02fordsvt View Post
My Pioneer DEH-P3500 unit dims with the lights but it was built to do it. If your unit wasn't originally built to automatically dim with the exterior lights, i doubt you will be able to do it very easily.
The x940bt is designed to pick up the signal from the illumination circuit.

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Old 03-06-2013, 07:18 AM   #9
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Quote:
Originally Posted by Kipp View Post
well neither that manual or the install manual have the info I was looking for. was trying to see what that illumination trigger needed to work. It should just need to see either a ground or possitive input for it to change; i'm just not sure which one. if all it wants is just a trigger and not a dimming input then you can use either the illumination wire or a parking light wire. you may need a relay though to change it to the correct trigger to work. Did your car come with sync? If not then the ill wire at the headunit should work, but if it had sync then looks like it's a data wire and you'll have to go to the parking light.
It does have Sync. I have to pull the frst2 module out to get some info off it because the its not programming the steering wheel controls, ill see what the factory illumination wire is giving for an output.

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Old 03-06-2013, 07:19 AM   #10
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Quote:
Originally Posted by opies View Post
The x940bt is designed to pick up the signal from the illumination circuit.

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I just saw that and edited my first post.
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