Help with installing an second amp

[drewhill_17]

I'm about to install a mono amp in my car. I already have a multichannel amp that was already installed for the door speakers and rear speakers. I've been searching on the web on how to install it but I'm having trouble understanding how to run the ground cable and power cable. Any info would be helpful. Thanks!

[garychoffmann]

Power cable goes to the battery. Ground goes to the chassis in a well cleaned bare metal spot. Size of wire depends on amp size

[drewhill_17]

Would both amps have a separate ground cable?

[garychoffmann]

Ideally yes, or a very large wire connected to a distribution block.

[drewhill_17]

Ideally yes, or a very large wire connected to a distribution block.

Would they need a fuse?

[Tbsh]

Would they need a fuse?

I've used them without a fuse and have seen many other people do it as well without a problem.

[drewhill_17]

Ok. Does it matter what size bolt I would need?

[garychoffmann]

No, bare metal to the chassis is much more important than size of screw/bolt

[fasfocus00]

if you have an amp already in there why not just mimic what is already done instead of asking 4000000000000000000000000 questions?

[drewhill_17]

if you have an amp already in there why not just mimic what is already done instead of asking 4000000000000000000000000 questions?

I didn't install it. My dad had it install a while back.

[drewhill_17]

Thank You for the advice and answers. I'll probably be back with some more questions later on