So i found out that all 3 of my amps got blown fuses, they were never blown until i removed my amps from the amp rack and put them back on. Negative on battery is disconected, change all the fuses on the amp, but once i put the neg on the battery they all blow up. any ideas? yes i have the rigth fuse 40amp

 

check if your wires are pinched somewhere... thats your best bet.... thats what i could guess... could be rubbing up against a piece of metal... are the fuses on the amps blowing or the fuse on the main power cable?

 

Check to make sure you didn't cross your wires, or have a few strands hanging out that might be crossing between the pos and neg inputs of one of your amps.

 

The fuses on the amps itself is blowing...check all wires there's no strands touch pos and neg..

 

if your blowning them at the amp then you have more of a problem... going to sound stupid but make sure that pos and neg are connected correctly and not backwards.... if you hooked it up backwards at all your screwed... the fuses on the amp are designed to protect the car, not the amp (little known fact)

 

Might check to make sure you don't have a lose speaker wire/shorted speaker wire somewhere.

 

amps are toast..