second battery wiring.

[kyleorsini 10+ year member]

so i bought a new agm battery for the trunk, its a "power tec" 8a24 same as the deka 8a24 if im not mistaken, and my question is for wiring i just bring a wire from positive and negative on the front battery through the car into the trunk and to the battery. and use 2 inline fueses for each battery, and then a relay? and then ground the battery? that was an option i got on another forum just double checking also, i have dont the big 3 with 0 gauge. can i use either 2 or 4 gauge to run to the second battery? or is there much difference from the 0 to 2/4 gauge

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[kyleorsini 10+ year member]

anyonee?

 

[Black Truck 10 10+ year member]

You just need a positive and negative from the front battery to the rear battery. Also a fuse on the positive line 12 inches aft the first battery, and 12 inches before you reach the 2nd battery. Both of these fuses need to be on the same line. Also 1 fuse aft the 2nd battery 12 inches or so. You dont need to ground the 2nd battery and you dont need to use a relay for anything if your just talking about hooking up the two batteries. Also you dont have to go 0 gauge but most people just use it because its readily available and most wont ever exceed the limits of the cable. If your under say 1400 watts or so then your fine with 2.

 

[Blue Fury 10+ year member]

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