how to join 2 amps?

4ga wire from battery +to the  rear  to a distribution block 4ga-split to(2) 8ga for short run if amp are close to each other if not fuse each 8ga.

ground to chassis from (-) of each amp

remote (ign) from hu to a relay or splice y type to remote on amp

hello ,

I have a different situation . any help would be greatly appreciated. I have a kenwood head unit with

only 2 sets of outputs. front and rear. I am trying to connect a 4 channel sony amp with a 2 channel bridgable amp

for a subwoofer. how do I connect the head unit and 2 amps? thanks for your help!!  

Thanks outlaw,

I guess I should have been more specific. my fault. My head unit has front and rear outputs. my 4 channel amp has

front and rear inputs. my 2 channel amp has one input and one output with a passthru. crutchfield said to connect

the front output of the head unit to the front input of the 4 channel . then connect the rear output of the headunit to the

output of the 2 channel amp. then connect the input of the 2 channel amp to the rear input of the 4 channel amp. 

its seems if i'm going to passthru the 2 channel I sould go from the head unit rear, to 2 channel input and then from 2 channel output to rear input of the 4 channel.

thanks again for your help, hopefully not too confusing!  

I personally would not go about installing it  that way, I would say run two sets of RCA's from your HU, when you get to the amplifiers, use a set of splitters on the front set of outputs and connect to the four channel, and the rear to the two channel powering your sub. This will give you fade capability between your subs and mains. Also if something happens to your amplifier powering you subs, you wont get cut out of your rear mains.

Either way will do the trick, it's your install. Good luck