Voltage issue

[SlugButter]

When I’m playing my system at higher volumes I have a visible dimming of my dome lights and head lights, but when I’m testing with a meter I can only find a drop from 14.2 to 13.4 at full tilt. I did the testing with my air conditioner running, headlights on with doors open to turn on the inside lighting. I tested at the battery, distribution block and at the amps themselves. I wouldn’t have thought a small voltage drop like that would cause much visible dimming. Would a drop of less than 1 volt actually cause lights to dim?

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[dragon.breath 10+ year member]

I had a similar with of my buddies cars. Fixed it by adding more body grounds to frame and engine.

 

[SlugButter]

I haven’t done the big 3 yet either. I didn’t think I needed it until I put some more watts into this project, but Murphy’s law would say different. I needed to do it anyway so i guess I will do it ahead of upgrading.