Stereo / Dash cuts out when bumping aftermarket stereo.

[jgadget]

Hello everyone.

 

I have an extensive stereo I did in my 2017 1500.  2 highs amps, DSP, Rockford bass amp.  Active focals in the front, focal coax in the rear, 2 sundown 8's in a ported box with the rear seat lift. insane amount of zero gauge, 300A us alternators.

 

I did the big 3 to a SMD distrobution block but used 1 zero gauge running through the power sensor.  battery has been upgraded to a northstar.

 

there is a zero gauge running the bass amp, and another zero to distrobuion for the 2 highs amps and dsp.  then I have 2 zeros running to the frame out the back of the cab.

 

When i really turn it up sometimes the stereo will stop playing, dash will cutout then everything will come back on with very low volume and I can turn it back up and will happen again.  It has to be something with power draw.  I was thinking of putting the stock alternator back in to see if it happens.

 

Any thoughts would be great!

 

thanks for your help guys.

[B R A D]

Has been years since I've fooled with audio gear but I'm assuming you have capacitor(s) installed as well, correct?

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[YukonXL04]

Mine has done that a couple times, for me it was too low of voltage. Still stock alt. But I'm running a DD 2k at .67 ohms so if you crank it, it's pulling some juice. I just keep an eye on my voltage now, also don't bump much while sitting still.

[Kyleorsini]

Check all your wiring again, I’d bet on a ground issue somewhere.


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[jgadget]

Thanks for the reply guys,  I agree maybe grounding,  ive got 2 1/0 to the frame at the moment,  i was thinking of running them completely up the the engine bay and connecting it to my ground distrobution.

[jgadget]

On 3/1/2021 at 6:01 AM, YukonXL04 said:

Mine has done that a couple times, for me it was too low of voltage. Still stock alt. But I'm running a DD 2k at .67 ohms so if you crank it, it's pulling some juice. I just keep an eye on my voltage now, also don't bump much while sitting still.

where are your grounds?

[YukonXL04]

Mine are under the backseat somewhere, I think the seat bolts. But your amp ground shouldn't affect your stock radio powering off, Mine was too low of voltage for sure, I watched it the second time it happened. Only drops low when sitting at idle and bumping. While driving around it seems to do fine. I should by a new alt but haven't gotten around to it yet

[jgadget]

i ran them out the back of the cab through the vent and they ground to the frame where there is a hanger that holds the ebrake cable i believe,  I ground down to raw metal,  but with that said there are not very many good places to ground it.  i've been thinking about running my grounds under the frame up to my ground distribution. 

 

one issue as well is I did the big 3 upgrade with a ground distro block 3 1/0 cables then one that runs through the current sensor the battery.  some people swear by bypassing the current sensor to get more grounds to the battery, I have not tried it,  I think you need the pcm controller by usa alternators to do so.

 

Thoughts?

Edited March 6, 2021 by jgadget