Results 1 to 4 of 4

Thread: Direct to battery or fuse box

  1. #1
    Newbie
    Join Date
    Oct 2008
    Posts
    10

    Question Direct to battery or fuse box

    Hey, all:
    Getting ready to get started with my install (once the equipment comes in) and have noticed that many posts speak of wiring equipment to the battery, with an in-line fuse within 1 foot of the battery. What would be the impact of adding a circuit for each device (PC, Amp, Sirius and monitor) to the fuse box and utilized those fuses to provide protection for my equipment?
    Admittedly a newbie question - but I'm a newbie...

    Thanks!

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    Location
    Elsewhere
    Posts
    13,950
    The biggest issue is with power draw.
    The equipment could very likely draw more power than an individual circuit could handle, especially if you have a powerful PC and/or amp(s).
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  3. #3
    Maximum Bitrate FusionFanatic's Avatar
    Join Date
    May 2007
    Location
    Boston
    Posts
    791
    the first thing you should realize is that the fuse at the power source (which in this case is the battery) is to protect the wire from catching fire if short-circuited or overloaded. while it does provide protection for devices connected after it, that's not it's primary purpose.

    you should avoid powering devices from the car's factory wiring as it is not designed to power additional devices. the best and safest option is to run a thick power wire (fused) from the battery) to an aftermarket fuse block. this method only requires running 1 wire through the firewall, but still keeps your wiring isolated from the car's factory wiring.

    using a fuse block allows you to have several individually fused power outputs without the need to run separate wires all the way to the battery. auto stores like AutoZone and PepBoys sell some basic fuse blocks, you can get some better models online. there are several sites (like this one) that carry a decent selection a fuse blocks.

    I use this model in my car:



  4. #4
    Maximum Bitrate DeltaFX's Avatar
    Join Date
    Sep 2004
    Location
    France
    Posts
    499
    Quote Originally Posted by FusionFanatic View Post
    ...
    You should avoid powering devices from the car's factory wiring as it is not designed to power additional devices. the best and safest option is to run a thick power wire (fused) from the battery) to an aftermarket fuse block. this method only requires running 1 wire through the firewall, but still keeps your wiring isolated from the car's factory wiring.
    ...
    Double the "thick" wire between negative pole of the batterie and car hull, too
    Now Galileo is real. Muhahahahaha :p

Similar Threads

  1. Fuse on the battery terminal?
    By FascistKaiser in forum Car Audio
    Replies: 2
    Last Post: 06-24-2008, 09:41 PM
  2. Professional way to tap a fuse box
    By MastaKebob in forum Newbie
    Replies: 9
    Last Post: 03-05-2007, 08:50 AM
  3. Powering car from a 13.8V power supply ok?
    By PURDooM in forum Power Supplies
    Replies: 27
    Last Post: 06-12-2006, 12:56 PM
  4. Car Battery, Fuse and Multimeter Question
    By timwiththebo in forum Newbie
    Replies: 2
    Last Post: 12-19-2004, 09:26 PM
  5. MPJA - MECI ASTEC DC-DC Converter
    By Luc in forum General Hardware Discussion
    Replies: 39
    Last Post: 11-22-2004, 10:31 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •