r32 12v constant cut out

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=106165
Printed Date: May 05, 2024 at 6:28 AM

Topic: r32 12v constant cut out

Posted By: vee93
Subject: r32 12v constant cut out
Date Posted: July 16, 2008 at 4:12 AM

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?

Replies:

Posted By: i am an idiot
Date Posted: July 16, 2008 at 7:28 AM

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.

Posted By: vee93
Date Posted: July 16, 2008 at 10:20 AM

lights off

Red: 12.5V
Yellow: 12.5V

lights on

Red: 12.3V
Yellow: 12.3V

Posted By: i am an idiot
Date Posted: July 16, 2008 at 11:30 AM

When you took these readings, where did you have the black meter lead connected.

Posted By: vee93
Date Posted: July 16, 2008 at 12:45 PM

grounded to the chassis and not the stock wire if your wondering. But i used the stock wire to connect the deck...o.O

Posted By: vee93
Date Posted: July 16, 2008 at 1:00 PM

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

Posted By: i am an idiot
Date Posted: July 16, 2008 at 9:49 PM

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.

Posted By: thunda_hawg
Date Posted: July 19, 2008 at 3:47 PM

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

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89' 240sx
Rockford t8004
boston z6 comp.
eclipse 3432
polk MM 8"
Taylor owes Joe a Sandwich

Posted By: vee93
Date Posted: July 21, 2008 at 1:26 AM

cheers got it working now. needed a new ground wire