Adding aftermarket equipment to vehicles with stop/start

[NSTALN 10+ year member]

My buddy has a VW Tiguan and wants to add a small system to it. Looking at factory HU into Dayton DSP, Focal 6.5's speakers, sub maybe Alpine R or Dayton Ref

I'm mostly worried about the amps...I know obviously stop/start makes the voltage fluctuate...what is the safest way to add aftermarket amps to these kinds of vehicles?

Anyone have experience with this?

Thanks!

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[huberoy123 10+ year member]

You can install an interface that maintains voltage to your amplifier, or an interface that defeats the start/stop function. Do a search on the web to investigate, or call the local car stereo shop for information.