Will this work?

[gnatnoop 10+ year member]

im planning on running one or more batterys to help with voltage drops, but the problem is i cant run them in the cab of my truck.. due to limited space, with it being a single cab (another batt in the engine compartment is not a option). However i do have a nice little tool box right behind the cab.. so i was thinking is it possible to run some thick power wire from my front batt to my rear batt(s) and still have my amp connected to the front batt... look at picture below if that didnt make any sense

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[Louisiana_CRX 5,000+ posts]

that shouldwork...A lot of people run spare batteries in the tool box

 

[gotparts90 10+ year member]

looks fine but for best life out of the rear batteries match them down to the lot number. If you run no isolator match all three.

 

[gnatnoop 10+ year member]

k i now have a question about this, will i be able to run the system off the rear batts with out hooking it up back there while the car is off, or will i have to hook the amps to the back batts.. what amp isolator should i run, i have a 220 amp alt. will i have a voltage drop because of the isolator when the truck is running?

 

[gnatnoop 10+ year member]

k i now have a question about this, will i be able to run the system off the rear batts with out hooking it up back there while the car is off, or will i have to hook the amps to the back batts.. what amp isolator should i run, i have a 220 amp alt. will i have a voltage drop because of the isolator when the truck is running?

anwser this question...please

 

[dappa5 10+ year member]

you should hook ut to the rear batt any way and up grade you charging wire from your alt to batt fuse b-tween frnt batt and rear batts and b-tween amps and rear batts

will mean reworking some of your power but is worth it and then yes if you isolate the batts w/ a switch you can run your system w/o truck on but not for long (batts will run dead) i do have a power inverter for show cars i could sell you (demo all day w/o running batts down)

 

[dappa5 10+ year member]

some thing like these i have a few so i'll let them go for 150 shipped ea

you can run your whole system on this as long as you have a wall to plug into

don't call # in post pm me here i'll fix you up

 

[dappa5 10+ year member]

gnatnoop have you checked your pm lately?

 

[smoka 10+ year member]

k i now have a question about this, will i be able to run the system off the rear batts with out hooking it up back there while the car is off, or will i have to hook the amps to the back batts.. what amp isolator should i run, i have a 220 amp alt. will i have a voltage drop because of the isolator when the truck is running?

The isolators will give a voltage drop of 0.4 to 0.7 volts because of how they are made. I'm not sure what will happen if you run more power than recommended, it will probably fry the isolator.

What amps, how much power are you running. What size batts are you planning on getting? If you can't get 3 of the same size batts, then just get 2 big batts in the back and remove the batt from the front. Thats what I'm doing with 2.5kwrms and 2 group 31 batts.

 

[gnatnoop 10+ year member]

The isolators will give a voltage drop of 0.4 to 0.7 volts because of how they are made. I'm not sure what will happen if you run more power than recommended, it will probably fry the isolator.
What amps, how much power are you running. What size batts are you planning on getting? If you can't get 3 of the same size batts, then just get 2 big batts in the back and remove the batt from the front. Thats what I'm doing with 2.5kwrms and 2 group 31 batts.

im running about 1500 watts rms, soon to be about 3000 im going to get 2 of the big c&d's. i have to have a battery upfront as i already have a bunch of stuff wired to that one..