Quote:
Originally Posted by transistor
I'm installing a house battery on the passenger side of my engine bay (connected to the starter battery through a blue sea ml-acr). Would it make more sense to connect the house battery to the grounding point right next to it, or run a cable to the ground on the starter battery?
Also, should I upgrade starter battery body ground wire to the same size I'm using for the positive connection?
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If it's isolated system then you can ground it to chasis at the closest spot. Upgrading the ground wire doesn't hurt. Single ground disconnect for both batteries will be more convient when disconnecting power' to' work on the vehicle.