G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

dome light help needed

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Old 03-05-2019, 09:10 PM
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Question dome light help needed

I have the g35 04' coupe -
So , i have the headliner down and all clips disconnected. which section in the service manuals could i find the harness info - for the DOME LIGHT, SUN ROOF, Visor wires in this particular harness?
The clip to the DOME light has 5 wires in it - i am trying to find out which color wire runs which function here.

*Ultimately i am removing the sun roof and have built my own headliner. I am now trying to get the NEW domelight to operate with the door opening.

I am as far getting the light power on but can not seem to get light to turn off after the door is closed. any suggestions?
 

Last edited by skynet808; 03-05-2019 at 09:14 PM.
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Old 03-05-2019, 09:13 PM
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When the door is closed a 12V signal is either given or cut off by the door switches. One of those wires will be changing in charge relative to the ground, you need to find that wire (with a multimeter) and make sure its hooked up right
 
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Old 03-05-2019, 09:19 PM
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yes- i was hoping there was a diagram that showed what each color wire was functioning in the roof.

I have a multimeter and a test light available. . . .. turned to 12 volt. one prong on the known hot wire and other going around to other wires,
i have cashed sparks and also caused popped fuse several times with no real result.

open to ideas. Than you!
 
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Old 03-05-2019, 09:20 PM
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i can get the light to do everything but shut itself off after a min of rest with all the doors closed. This is my goal. . . .. I AM ASSUMING THAT IS WHAT THE original FUNCTION WAS IN ALL COUPES??
Auto dim-out after alotted time right??
 

Last edited by skynet808; 03-05-2019 at 09:36 PM.
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Old 03-05-2019, 09:57 PM
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I'll play with mine tomorrow and get back to you
 
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Old 03-05-2019, 10:43 PM
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Yes, the dome light will stay on for one minute after the door is closed.

If u want to turn it off right away, press the lock button on your remote.
 
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Old 03-06-2019, 05:46 AM
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04 G35 Sedan performance package. 70k Eibach springs and sway bars. 19 inch wheels. Plenum spacer.
Originally Posted by skynet808 View Post
yes- i was hoping there was a diagram that showed what each color wire was functioning in the roof.

I have a multimeter and a test light available. . . .. turned to 12 volt. one prong on the known hot wire and other going around to other wires,
i have cashed sparks and also caused popped fuse several times with no real result.

open to ideas. Than you!
The proper way to use a test light. One end on a known good ground. The other end you probe the wires looking for 12volts. If you are looking for a ground. One end of ohmmeter on a good ground. The other end probe the wires looking for a ground. Ohmmeter will go to zero for a ground. The way you are doing it is incorrect and will start a fire and damage components.
 
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Old 03-06-2019, 05:53 AM
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Originally Posted by Pbfoot View Post
The proper way to use a test light. One end on a known good ground. The other end you probe the wires looking for 12volts. If you are looking for a ground. One end of ohmmeter on a good ground. The other end probe the wires looking for a ground. Ohmmeter will go to zero for a ground. The way you are doing it is incorrect and will start a fire and damage components.
Yup, better to use a multimeter to avoid problems like that.
 
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Old 03-06-2019, 07:34 AM
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Originally Posted by Pbfoot View Post
The proper way to use a test light. One end on a known good ground. The other end you probe the wires looking for 12volts. If you are looking for a ground. One end of ohmmeter on a good ground. The other end probe the wires looking for a ground. Ohmmeter will go to zero for a ground. The way you are doing it is incorrect and will start a fire and damage components.
got it . . . thanks man. much appreciated. ill work it that way and see if i can get it figured out!
 
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Old 03-06-2019, 08:19 AM
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This may be too obvious but don't you have a switch on the dome light assembly? It toggles between always on, always off and auto shut off in the sedans.
 
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Old 03-06-2019, 11:37 AM
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It's all controlled by the BCM, not just traditional switching.


 
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Old 03-06-2019, 11:38 AM
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Might be a little different on the sedan but that should give you a good idea how the map lamp integrates.
 
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