Dual Battery Question. Already Searched

[Scoobasteve 10+ year member]

Hi Guys,

I have a 1999 Civic SI, with a 165a alt and a yellow top under the hood. Big 3 has been completed with 0ga wire.

I'm planning on running a

Alpine MRV-F545 4 channel (fused at 80a)

and

MTX 7801 - 150a i believe.

My question is

If i run the yellow top under the hood and a Kinetik HC2400 for the trunk do i have to run the negative cable from the yellow top to the kinetik or can i use a chassis ground in the trunk as the yellow top is grounded directly to the chassis under the hood.

Or would i be better off running a distro block under the hood and the HC2400 as my main battery.

Thanks,

Steve

Click to read more...

 

[hemi=22s 10+ year member]

if u got the wire/funds run a ground too but not necessary as long as u have a good ground to chassis in the back it will be fine (make sure to get bare metal and attach with lock washer or similar)

 

[01 S 10 10+ year member]

if u got the wire/funds run a ground too but not necessary as long as u have a good ground to chassis in the back it will be fine (make sure to get bare metal and attach with lock washer or similar)

x2

 

[Scoobasteve 10+ year member]

My main issue is i dont think i can squeeze in another wire to the back of the car and still get the panels back on.

 

[hemi=22s 10+ year member]

just ground it to the chassis then like i said tho make sure u get bare metal there and use locking washer etc cause if u just screw it it will rattle loose over time

 

[knukonceptz 10+ year member]

Just make sure you use the same gauge wire to ground both front and rear battery. 1/0 would be recommended throughout that install. Also you "should" fuse the main wire 18" from both battteries to keep power out of the cabin in case of accident. One Fuse holder will not protect the car with the second power source now in the car, either use two fuse holders or none at all.

 

[SethPhillips 5,000+ posts]

ground batt in the trunk. ground amp at batt.

 

[bad_trip 10+ year member]

either way. all the way to battery is better IMO.