Help! My car occasionally electrically dies..

[Xwizit1]

07 3dr 1.5l base model. I upgraded the amp and sub in my car.
I added a kinetik 1900A battery, then I think I destroyed the oem alt. So today I added a Brand X 250A alt. Still has the same problem. The engine bogs down, but still runs, the lights shut off for a second or two, then kick back on.. My first system had a 40A fuse, and this one is 100A.. I also added a train horn, with a relay, to the existing 1 wire.
Any suggestions would be greatly appreciated!!
Thanks in Advance
Xwizit1

[bronsin]

I hate to say this, but it appears the modifications you made to your stereo caused the problem. But unfortunately The cure eludes me.

:iono::

[_S7V7N_]

Before going any further, you should have at the very least, 3 fuses.
1- close to your front battery.
1- right before your second battery
1- Fused distribution block

Reason is in case you ever wrecked or the power wire touches metal your whole car won't catch fire. Safety first.

I have an 07 Sedan with a kinetik in the trunk on a stock alternator.

Did you do a Big 3 Upgrade ? add a thicker run of wire from alternator to your main battery, thicker ground wire on alternator and a thicker ground on your battery.

Do not remove any of the factory wiring just add to it. A good 4 gauge wire or a cheap 0 gauge will do the job.

[_S7V7N_]

What gauge wire are you running for your system and how big of an amp do you have?