im about to upgrade my wiring from a full 8guage kit to a 4guage kit.(im adding a second amp).... i'm just wondering about how i should ground it. should i bridge it from the old amp to the new amp to ground, or should i ground them seperately? and can i keep my 8 guage ground, or should that be upgraded to the 4?

...and does anybody know of a box design that would fit 2 10" subs and 2 amps inside a regular cab ford ranger without losing too much leg room? lol, probly not.

 

Personally, I'd ground them seperately.

And maybe build an amp rack so you dont lost space.

 

i would definitely ground them separately and upgrade the grounds to 4 gauge as well.

 

8 ga ground with 4 ga power .... why not just light ure car on fire (cause it will happen eventually)...... very bad idea

 

Its not a bad idea, it just makes the 4gauge upgrade pointless.

Think of it as having a fire truck to pump the water, but using a garden hose to spray it.

 

and what happens to the garden hose? its gonna blow a hole or 2 under the pressure just like the 8ga is gonna heat up and light on fire(well first it gets real hot then the plastic coating melts off)...... i had one of the trunks of my cars light on fire back wen i didnt kno bout car audio and used any wire anywhere.....

 

Or even think bout it as ure kitchen sink? 1 inch pipe pumping water in and a half inch drain ... whats gonna happen? over flow.... and ure gonnna have water everywhere

 

Not really, the other thing people don't realize is that its a lot harder to put stress on wire than people think, 8ga could probably handle ~80-100 amps before getting warm, and since he won't be drawing that from them each let alone together, he will be fine.

 

and theres one thing i forgot to mention... im not sure if it makes a difference or not.... the 4ga power wire is running into a dist block, and splits to 2 8 ga wires, one going to each amp. in that case could i run an 8ga ground from each amp?

 

well that kinda paints a totally diff picture...... that would be fine in matches out....