Post by
qsiguy »
https://forums.nicoclub.com/qsiguy-u27015.html
Thu Sep 21, 2006 1:46 pm
I'd still like to get a more detailed description of the problem and symptoms. From the small amount of info you've shared there are a few external things you could try to possibly narrow down the issue. Pulsing power can be caused by faulty grounds and a short in one of the speakers. Is the pulsing all the time power is on or only at higher volumes? Does the pulsing frequency change with volume, RPM, engine on or off, etc. What is happening on the display? Is it flashing, normal, etc.
I would double check the radios gound and would probably wire up a new ground from chassis to the radio case and see if problem gets better, worse or same. Then I'd try disconnecting each speaker one at a time to see if any of them change the condition.
Can you get more in depth about your problem? There are a few of us that have been in the car audio industry for quite a while and could possibly help with troubleshooting help and info.