|
Generally ignition, starter, and alternator are the big draw on the engine side. If you have amps and subs you're going to have to run those with thick wires as well.
Most of the accessories on the car like lights, horn, gauges, etc. will be no more than 15A max, with the exception of the fans and rear defroster. These will draw than 15A. Check the FSM for exact specs.
The other thing you may want to fix is Nissan draws current for the headlights directly through the headlight switch and then routes that power to the headlights. This really isn't ideal because you have a lot of current running throught the steering column, which corrodes the headlight switch over time.
For stuff like these, the switch should be wired to a relay, and let the 30A relay handle power to the headlights.
Again, you should know exactly how relays work if you're going to redo the wiring.
|