Thread: Splittin' a 4g into 4g or....?

what are the fuse ratings on the amps?

JL 300/4 - 40A

JL 250/1 - 30A

recommended Fuse type


for my own info, why is this important and what does this mean for my engine compartment fuse, its rating?

shouldn't be any problem to split it to even 2x 8gauge, if you're not planning on running kilometers/miles of wire.

for your engine compartment fuse you just want to add up the fuses in your system. so for your system you need an 70 amp fuse (if you're going to run a m1-atx psu off that distro block, you'll need an 80 amp fuse) at the battery.

the amperage and length of wire determines what gauge you'll need.

but scott, since he's alread running a 4gauge all the way through it won't really matter, as long as he keeps the added wires as short as possible.

You can understand NOT wanting to purchase 1/0 and re-run it (the **** is like as thick as a quarter is in diameter).

Id be taking the current 4g wire, cutting it back by about 3 feet, splitting it into two 4gs and using the 3 feet or so to connect to the 2 amps.

no carputer yet, this is my gut the car, RAAMAT it, re-arrange the wires and amps.

no loot for the carpute, sound is first in my book.


Side question:

what do you prefer, a split ground block or single wires to same grounding point (bolt)?

Originally Posted by sdashiki

what do you prefer, a split ground block or single wires to same grounding point (bolt)?

Whatever is easier or looks cleaner. Stay away from seat belt bolts because they are coated in grease. You could bolt it somewhere else using your own bolt through a section of sheet metal with the paint off.

You should be fine with the 4 gauge. You can split it into two 4G or 8g if you keep it short like IC said.

Originally Posted by IC-C30

but scott, since he's alread running a 4gauge all the way through it won't really matter, as long as he keeps the added wires as short as possible.

yup i agree, i was just trying to enlighten him on why i wanted to know what fuses were on the amps.

here is another useful page for anyone doing a search in the future:
http://www.the12volt.com/info/recwirsz.asp

Thanks, ill be buying the stinger 4g to two 4g splitter and running two seperate grounds to the same point.

the ground point is already done and in use with my current amp.


would the battery fuse be better off going higher than equal?

Like if i need 70A would getting 90 or 100A be a bad idea?