subs cut out when brakes are applied

[cwatts2oo8]

i have a 200amp alternator and and optima red top battery.. so the idle voltage is like 14.5v.. i dont think its a voltage problem beacuse sometimes even at a medium volume they cut out but only when the brakes are applied.

 

[itssteve 10+ year member]

you could be grounding out the turn on wire cause the amp to almost shut off when you brake just check all the wiring and make sure everything is tight