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Discussion Starter · #1 ·
I'm trying to install parking sensor system for my 2006 sonata. I need to identify wires of positive of reverse light, break light and the negative pole (earth wire). I found a bunch of wires in the trunk. I searched the forum and internet, it looks like the blue wire is for reverse light, green for break light and black for earth wire. And that's how I wire the parking sensor system to currently.
However it doesn't look like the system is working.
Does anyone have any idea about the color codes for these wires? Thank you.
 

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What is a parking sensor?

Identifying the wires is simple, but be advised the Sonata uses a negative trigger system for most/all of the lights. For example, the + is hot/fused and the light illuminates when the other wire is grounded by the body control module.

You seem to be saying the module you're trying to install is a positive trigger system. If so you'll need to install several relays to get it to work properly.

Finding the right wire is a matter of tracing the wires to the bulb you want. I don't remember if Hyundai changes wire colors between the harness wires and the bulbs.
 

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Discussion Starter · #3 ·
I mean backup sensors system. The system has 3 wires. The instruction says "connect wire A to backup light, wire B to stop/brake light and C to ground/earth pole." (I'm using A, B, C to refer to the wires from sensors system, just not to confuse with the colors that I'll use to describe the wires in the car trunk.)

Currently I wire A to the "Blue" wire in the car trunk, B to "Green" wire and C to "Black" wire. And by testing, I found something interesting. If I release the trunk lid and put car to "Reverse", the system is working. If I release the trunk lid and press brake, it's working to; however, if I press brake and put car to "Reverse", it is NOT working unless I release the trunk lid.

So I have to release the trunk lid first if I expect the sensors system to work. And then finish parking, close the trunk lid, lock and car and leave...funny.

So I think maybe I wired one of the 3 wires to the wrong one, but not sure which one.
 

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QUOTE (ipods @ Dec 6 2010, 01:48 PM) index.php?act=findpost&pid=377405
I mean backup sensors system. The system has 3 wires. The instruction says "connect wire A to backup light, wire B to stop/brake light and C to ground/earth pole." (I'm using A, B, C to refer to the wires from sensors system, just not to confuse with the colors that I'll use to describe the wires in the car trunk.)

Currently I wire A to the "Blue" wire in the car trunk, B to "Green" wire and C to "Black" wire. And by testing, I found something interesting. If I release the trunk lid and put car to "Reverse", the system is working. If I release the trunk lid and press brake, it's working to; however, if I press brake and put car to "Reverse", it is NOT working unless I release the trunk lid.

So I have to release the trunk lid first if I expect the sensors system to work. And then finish parking, close the trunk lid, lock and car and leave...funny.

So I think maybe I wired one of the 3 wires to the wrong one, but not sure which one.
I'm wondering if instead of wire A being wired to the backup light, it might be wired to trunk light, thus the need to pop the trunk to get the system to work instead of it working when vehicle is put into reverse.
 

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Discussion Starter · #5 ·
You're right that the one connect to trunk light should be disconnect. but I don't know which one. Because when I release the trunk lid and put it to reverse, it's working too. So I'm guessing the backup light probably is wired correctly. I think the 3 wires are wired to backup light, stop light and trunk light, but not sure which one is currently wired to trunk light (maybe the C?). And I don't know which other wire (a negative wire?) that I should wire this one to.

QUOTE (ActionMan @ Dec 6 2010, 04:07 PM) index.php?act=findpost&pid=377410
I'm wondering if instead of wire A being wired to the backup light, it might be wired to trunk light, thus the need to pop the trunk to get the system to work instead of it working when vehicle is put into reverse.
 

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Discussion Starter · #6 ·
What does negative trigger system mean? Does that mean I have to wire the system to + of backup light and the other wire be grounded by the body control module? It does sound like what the instruction asks me to do. But I don't know which wire is the one that can lead to grounded? I was assuming the black wire, but it looks like not. Maybe the white wire? thanks.

QUOTE (Dennis the Mennis @ Dec 5 2010, 10:54 PM) index.php?act=findpost&pid=377255
What is a parking sensor?

Identifying the wires is simple, but be advised the Sonata uses a negative trigger system for most/all of the lights. For example, the + is hot/fused and the light illuminates when the other wire is grounded by the body control module.

You seem to be saying the module you're trying to install is a positive trigger system. If so you'll need to install several relays to get it to work properly.

Finding the right wire is a matter of tracing the wires to the bulb you want. I don't remember if Hyundai changes wire colors between the harness wires and the bulbs.
 

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Positive trigger: one wire of the lamp is grounded to the chassis. The other wire is connected to the + battery terminal through a fuse and switch. When the switch is closed, current flows and the light illuminates.

Negative trigger: one wire of the lamp is connected to the + battery through a fuse; it's always hot. The other wire connects through a switch to the chassis. When the switch is closed, current flows and the light illuminates.

If your parking sensor is set up for a negative trigger, you have to probe both wires that go to the backup light to see which is which. If you connect your probe's black wire to the chassis and probe the lamp's wires, one wire will always light the probe; it doesn't matter whether the light's on or off. That's NOT the one you want to use. The other wire will light the probe if the light's off and make the probe go DARK when the light goes on. That's the wire you want to use.

Don't try to find the wire by trial and error or color. Get to the reverse lamp and probe the wires there. Note which wire you're interested in and trace it back to the wires under the mat. Hopefully they'll be the same color.
 

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Discussion Starter · #8 ·
Thanks for everyone's reply.
I've just figured out the correct wire I have to connect the negative wire to. The reason I didn't want to trace the wire from the backup lights was that sonata's backup lights were on the trunk lid, which means I had to remove the entire piece of trunk lid's interior panel to see the wires. So I had to test and see which one was the negative wire for it.
I was lucky enough to find out that the white wire was the one on the first trial. Of course I had excluded some wires that went to the brake lights and signal lights which were on the side of trunk. So I could easily trace them.
 

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Radar detector connecting to sun roof switch box in 2006 Sonata

I'd like to connect the Escort 9500ix radar detector to sunroof/dom light switch box for permanent power connection. I am looking for web links to schematics/wiring diagrams/manuals/guides/etc. for information on wiring connection(s) and access into the switch box. I thank everyone in advance for attention and help.:confused:
 

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I'd like to connect the Escort 9500ix radar detector to sunroof/dom light switch box for permanent power connection. I am looking for web links to schematics/wiring diagrams/manuals/guides/etc. for information on wiring connection(s) and access into the switch box. I thank everyone in advance for attention and help.:confused:
You should start a new thread.
 

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I'd like to connect the Escort 9500ix radar detector to sunroof/dom light switch box for permanent power connection. I am looking for web links to schematics/wiring diagrams/manuals/guides/etc. for information on wiring connection(s) and access into the switch box. I thank everyone in advance for attention and help.:confused:
FYI,
I connected mine to the fuse box under the steering wheel using the add-on fuse. Then I routed the wire underneath the windshield - pretty easy. Just lay it there and push under the trim with credit card or something. The control button is underneath the steering wheel.
Kinda hard to explain but very easy to do. There's only about 2 inches of wire visible where it plugs into the radar detector. If you want to do the same I can take a photo or something.
 

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I'd like to connect the Escort 9500ix radar detector to sunroof/dom light switch box for permanent power connection. I am looking for web links to schematics/wiring diagrams/manuals/guides/etc. for information on wiring connection(s) and access into the switch box. I thank everyone in advance for attention and help.:confused:
DVOM is your friend
 

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The way I wired mine is into the acc of the car so when the car turns on it turns on and when the car is off it shuts off, I have it up nextto the rearview mirror. Whenever I get pulled over by a piggy I flip down the sun visior and the radar disappears.
 

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The way I wired mine is into the acc of the car so when the car turns on it turns on and when the car is off it shuts off, I have it up nextto the rearview mirror. Whenever I get pulled over by a piggy I flip down the sun visior and the radar disappears.
How is it mounted there?
I tried this long time ago and it just wouldn't stay there. Fell down every 5 minutes.
 

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