maniacalmini
+1y
ALWAYS!! use a fuse/circuit breaker close to the battery unless you enjoy your truck catching fire! a 4 gauge line to the starter, as mentioned, or distribution block up front, then distribute it from there. wouldnt run anything smaller than 4 gauge to the starter then 8 to everything else would be fine. the only high current draw off that 4 gauge to the front would be the starter during starting. 8 gauge body-cab-frame grounds will be sufficient. as far as the stereo stuff goes it would be run off the batt. like normal from the rear. so, for example, you need 0 gauge for your stereo it would be run from the batt. and not affect the 4 gauge to the front, esp if you have an isolator and a second batt. but you can always run bigger wire if you want. just my input. take it or leave it.