Where is the Ground?? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 30 (permalink) Old 09-16-2012, 09:20 AM Thread Starter
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Where is the Ground??

https://www.yourcobalt.com/forums/int...or-sensor.html

^^That's the thread I want to add some more too..

I want to do the same thing the OP is doing (When my door opens more than just my map lights will come on.) I know where the door sensor is and on post #5 Lankysean says: They are in the body of the car in the door frame near the hood of the car. Just open the doors and look, you'll see um. They don't come out so you gotta pull of the plastic molding to get at them.

What exactly is the plastic molding.. just the area around where is pushes back in?? And where do I actually ground my (-) wire? that thread doesn't show.

Thanks!
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post #2 of 30 (permalink) Old 09-16-2012, 09:41 AM
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What is it you want to do exactly? Inside or out? LEDs or neons? Click on picture....

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post #3 of 30 (permalink) Old 09-16-2012, 10:00 AM Thread Starter
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I want LEDs to come on inside the car when the door is opened... I've been trying to do some research and superbrightleds has the fuse tap for the constant power source just now I dont know where to ground so when my door opens or car is unlocked the lights will come on just like my map lights.
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post #4 of 30 (permalink) Old 09-16-2012, 10:14 AM
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Pin "A10" on "C3" "Body Control Module" boxed in black in picture with single gray wire. Circled in red at "B12" twin gray wires is the dimmer supply voltage if you want them to follow cluster intensity. Otherwise Dome fuse is a good place for your fuse tap.



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post #5 of 30 (permalink) Old 09-16-2012, 10:20 AM
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Any exposed metal from the vehicle unibody is ground, there is a switch in the door frame that is closed while the door is open and is opened by the door closing by depressing a button. This switch controls one setting for the dome light three way switch in the overhead. Splicing into the door frame switch will allow you to operate your LED's with the door.

Last edited by JDYeaton; 09-16-2012 at 10:36 AM. Reason: Amplifing instructions
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post #6 of 30 (permalink) Old 09-16-2012, 10:25 AM Thread Starter
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I'm sorry but im not to good with wiring.. what do you mean pin "A10" on "C3" .... whats circled in red is that where I should put my positive wire?? and the ground to the BCM ( black box)

---------- Post added at 09:25 AM ---------- Previous post was at 09:24 AM ----------

Quote:
Originally Posted by JDYeaton View Post
Any exposed metal is ground
ha well i know that much.. just i've been reading and poeple are saying ground to the sensor and im just not for what they mean.
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post #7 of 30 (permalink) Old 09-16-2012, 10:31 AM
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Pin "A10" on "C3" goes to ground when you open a door and turns on your dome light "ON". If you supply a 12Volt to the positive side of your LEDs and wire the negative side to this pin(A10) it will come on same as your dome light and go off at same time.

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post #8 of 30 (permalink) Old 09-16-2012, 10:36 AM Thread Starter
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ok does it work same with map lights because I dont have a dome light
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post #9 of 30 (permalink) Old 09-16-2012, 11:17 AM
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Yes, dome light and map lights get their controlled ground from this pin.


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post #10 of 30 (permalink) Old 09-16-2012, 12:01 PM Thread Starter
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alright sweet thanks man
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