You *need* a fuse or circuit breaker less than 18 inches from the battery, or you're just asking for trouble. That long of an unfused link can be a real fire hazzard otherwise.

Power distribution is easiest by using a power distribution block from a stereo shop. Find a nice aesthetic place to mount it and you could still use the rest of the factory wiring (several + and - leads from the battery to connect to the fuse block remember). The same type of distribution block can be used for the ground side to ease installation.

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