Electrical questions?

[dsw422]

Hey guys,

Getting ready to do my first big electrical buI'll. I'd like some pointers and how to'set.

So here's what I'm doing.. build is going in a 2004 lexus ls430. Itll be a 4th order wall for 2 RE Audio MT 18s powered by 2 DD M3B amps, and an amp for the highs. Electrical will be stock alt (I kno), 6 extra batteries (4 data safe 12hx330-fr, 2 sprinter s12v370f), 3 or 4 runs of Royal Excelene 2/0 power wire front to back. 

Here's are the questions.

1. Do I need to run negative wire from front to back? If so, how many runs?

2. How many runs of wire do I need to go from the alt to the engine battery?

3.Do any of the runs need to go from alt to back batteries?

4. What size fuses should I use for each run from front to back and do I need fuses on each end of the runs (fuse after engine batt and fuse before rear batts)?

5. How many negative runs do I need to run from rear Batts to ground?

6. Am I forgetting anything?

 

Thanks for any help guys!

[Ron36]

There is no need to run a ground from front to rear , body grounds all ground the same,  I would do 1 2/0 run from battery to alt part of big 3, as far as running from alt to rear batteries it really doesn't matter most people go front battery to rear and for your set up I'd do at least 2 runs maybe more,  Fuses everywhere front and back even between front battery to alt may only be a 2ft run but fuse it.  The amp should say what size fuse probably 300amp.  There is no such thing as to many grounds with electrical more is better . After all that I still think u need to start looking for an ALT. Those are awesome amps u have good luck . Most builds u can spend as much on mids as u do on wiring and fuses if not more. Remember your 6k is 6k at 14.4 not 11.6v 

[dsw422]

Thanks for the help!