Wiring gurus...need help...I am upgrading my old 35A alternator to the 135A alternator that I just bought...it is marine...my question is...is 4 gauge wire fine to wire to the battery? Also do I need to upgrade the Circuit Breaker in the boat...it has a 40A Circuit Breaker? The boat is a 1986 Dixie Super SKier with a PCM 351W Motor...I am running about 1200W and only have 1 battery...I only plan on running the stereo during running the boat/wakeboarding...I have read some old discussions but I think it just confuses me more...any help or suggestions or even some websites that will help with the wiring...I am also thinking that maybe it might be a good idea for a 2nd battery...but funds are a little low...so just want to run it like it is for now...the circuit breaker just protects the dash components and motor? Unsure of what the circuit breaker is really for...there is not much electronics/computer in the boat? No EFI...it is carburetored...thanks for any help...
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