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r32 12v constant cut out


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vee93 
Member - Posts: 5
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Joined: July 10, 2008
Location: Australia
Posted: July 16, 2008 at 4:12 AM / IP Logged  

hi im having some trouble installing my deck. Everything seems to be working fine, except that when i turn on the fog lights the deck just turns off. ive checked the current and it was working fine at 0.53A if i have it to the correct settings, but goes to zero when the lights are turned on for night time driving.

my car is a nissan r32 '89 skyline.
anyone ever encountered this problem before?

i am an idiot 
Platinum - Posts: 13,693
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 16, 2008 at 7:28 AM / IP Logged  

With the foglights turned off check the voltage on the red and yellow wires of your radio.   Turn the fog lights on and do the same.  When checking the voltage use the chassis of the radio as ground for your meter.  Post the voltages.

vee93 
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Joined: July 10, 2008
Location: Australia
Posted: July 16, 2008 at 10:20 AM / IP Logged  

lights off

Red:       12.5V

Yellow:   12.5V
lights on

Red:        12.3V

Yellow:    12.3V

i am an idiot 
Platinum - Posts: 13,693
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 16, 2008 at 11:30 AM / IP Logged  
When you took these readings, where did you have the black meter lead connected.
vee93 
Member - Posts: 5
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Joined: July 10, 2008
Location: Australia
Posted: July 16, 2008 at 12:45 PM / IP Logged  
grounded to the chassis and not the stock wire if your wondering. But i used the stock wire to connect the deck...o.O
vee93 
Member - Posts: 5
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Joined: July 10, 2008
Location: Australia
Posted: July 16, 2008 at 1:00 PM / IP Logged  

wow...i connected it to the stock wire this time.

lights off:
red:        11.7V
yellow:   11.7V

lights on

red:        0.08V
yellow:   0.11V

i am an idiot 
Platinum - Posts: 13,693
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 16, 2008 at 9:49 PM / IP Logged  

Cut the ground wire off at the connection to the wire of the vehicle.  Ground the radio to the chassis of the vehicle.  It seems as though the wire you were using for ground is probably somehow related to the fog lights.  Usually when this happens it blows a fuse and the lights do not work anymore.  When the fog lights come on there is 12 volts on that wire you used.  Thus providing the real low voltages you got.

thunda_hawg 
Member - Posts: 46
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Joined: December 21, 2007
Location: Georgia, United States
Posted: July 19, 2008 at 3:47 PM / IP Logged  

sounds like a nissan illumination wire you hooked the constant or the groud wire to just meter the harness as a whole and find the constant wire

the harness for the radio is similar to the sentra i believe

89' 240sx
Rockford t8004
boston z6 comp.
eclipse 3432
polk MM 8"
Taylor owes Joe a Sandwich
vee93 
Member - Posts: 5
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Joined: July 10, 2008
Location: Australia
Posted: July 21, 2008 at 1:26 AM / IP Logged  
cheers got it working now. needed a new ground wire

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