Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: What fuse and What size wire?? Read the FAQ still dont no

  1. #1
    Newbie
    Join Date
    Jul 2010
    Posts
    12

    What fuse and What size wire?? Read the FAQ still dont no

    Hi guys first car pc,
    Just a question on my wiring I've read the FAQ and understand it all just dont no how to work out the amps? and also whats the best way to run the accessory line? does it require as big of a wire as the 12v constant? Ive attached a wiring diagram of what i'm planning on doing.

  2. #2
    Maximum Bitrate boelle's Avatar
    Join Date
    Oct 2008
    Location
    Odense, Denmark
    Posts
    685
    Hi

    The ACC line is sure just there to tell the PSU to fire up so I would just put a 1-2 A fuse there and skip the relay... and then a bigger fuse on the constant 12V line

    other than that you should be good to go
    Blessed are the "cracked" for it is they who let in the light.

  3. #3
    Maximum Bitrate boelle's Avatar
    Join Date
    Oct 2008
    Location
    Odense, Denmark
    Posts
    685
    if you want to keep the relay no problem, it should not draw much... just insert a 1-2 A fuse before the relay
    Blessed are the "cracked" for it is they who let in the light.

  4. #4
    Newbie
    Join Date
    Jul 2010
    Posts
    12
    Thanks any idea what size wire i need? was thinking 8gauge with a 50amp fuse?

  5. #5
    Maximum Bitrate boelle's Avatar
    Join Date
    Oct 2008
    Location
    Odense, Denmark
    Posts
    685
    for the acc line? way overkill

    are there any fuses on the psu? if so a fuse rated just above that would do

    for wire size i need to know the fuse size
    Blessed are the "cracked" for it is they who let in the light.

  6. #6
    Newbie
    Join Date
    Jul 2010
    Posts
    12
    Nah for the main power line.. Was gonna use like a 16gauge wire spliced into the main power lead for the accessory.. Not sure about the fuse I'm assuming it's a 15amp from doing a bit of research so 50amp is way to high.

  7. #7
    Maximum Bitrate boelle's Avatar
    Join Date
    Oct 2008
    Location
    Odense, Denmark
    Posts
    685
    This is how i would wire it:



    for the acc line 16 AWG would do, you can go to 18 but that would the limit. 14 would be overkill for acc since its more or less a sense wire.

    for main power 8 awg would do even if you plan to mount on rear bumber :-D
    Blessed are the "cracked" for it is they who let in the light.

  8. #8
    Newbie
    Join Date
    Jul 2010
    Posts
    12
    cool last thing i need then is where to get a acc line from heard back of the fuse box? i was going to splice into stereo acc wire and that's why i was going to use the relay. Think ill go with the 10 gauge wire as that still should have a bit of over kill

    Thanks Heaps for you help

  9. #9
    Maximum Bitrate boelle's Avatar
    Join Date
    Oct 2008
    Location
    Odense, Denmark
    Posts
    685
    most easy is to get acc from plug on HU...
    Blessed are the "cracked" for it is they who let in the light.

  10. #10
    MySQL Error soundman98's Avatar
    Join Date
    Jan 2008
    Location
    on the border of northern IL/IN
    Posts
    5,820
    in some cars the acc line is already fused, so even the 2a fuse might be unnecessary.

    you really don't need anything larger then 18 or 16 ga wire for the acc line. only a couple of car audio amps pull more then 500ma from it, most devices are closer to 100ma draw..

    10ga should be fine for the power input, just make sure to fuse it down to about what the m2 is capable of. the purpose of fuses are to protect things-- like when a car gets sheared in half in a horrific accident, the fuse will blow when the power wire gets cut, preventing it from sparking, and starting a fire..

Page 1 of 2 12 LastLast

Similar Threads

  1. What type of fuse should I use
    By mprover in forum General Hardware Discussion
    Replies: 5
    Last Post: 08-08-2000, 06:35 AM

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
  •