Wiring for Fan, Lights, Acc.

[chibahawk 10+ year member]

Okay so I read a little something on the 12volt.com page about using a 30 amp relay and I get all that stuff but I just had a question about something.. Is there a 12volt wire suppose to run from my battery to the relay? I figure I know where all the other wires will run to..

Also would anyone be kind enough to suggest a list of things I'll need to pick up for my project?

Im going with probably 4 80mm Fans (PC fans) to cool down my 801S RF Punch amp.. First would you figure thats enough cooling power? 2 Exhaust, 2 Intake? Also Im going to sandblast some plexi and use it as a window to look through for where im storing my amp.. Ill be making a locked hatch in the spare tire well..

Now my question about having a list made for me is that im unsure what else I'll need apart from 4 Fans, a 30 Amp Relay, and some lights (LED or Neon not sure which Im going to go with) ... what size wire will I need to pick up to wire the lights and fans to the board?

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[AVSTANG02]

You dont even need the relay you could just wire the fans up to the amps remote on??

 

[stones 10+ year member]

Nope don't do that you can damage the HU remote output as it will only handle a very low current demand.

Heres a diagram for wireing relays.

5.12   How do I wire a relay in my system? [iDB]
================================================

There are two types of relays that are commonly used in 12-volt
automotive applications:  Single-pole Double Throw (SPDT) relays, which
have 5 pins, and Single Pole, Single Throw (SPST) relays, which have 4
pins.  Depending on the application, you can use either of these; for
remote turn-on leads (see Section 5.11), an SPST relay is fine,
SPDT relays are often used in alarm installations.  Make sure that you
get a 12-volt relay - this specifies the voltage required to make the
relay "switch."

The connections on the two types of relays look like this:

                SPST                       SPDT
        =====================      =====================
                 (87)                       (87)
             +---------+                +---------+
             |   ---   |                |   ---   |
             |         |                |         |
        (86) | |     | | (85)      (86) | | --- | | (87a - center)
             |         |                |         | (85 - right)
             |    |    |                |    |    |
             +---------+                +---------+
                 (30)                       (30)

Pins 85 and 86 connect to the coil which causes the relay to switch.
On both relays, pins 30 and 87 are normally disconnected.  When the
relay is activated (switched) pin 30 and 87 are then in contact.  The
difference with the SPDT relay is that in the "normal" state, pins 30
and 87a are in contact.

To hook up a relay (either kind) for a remote turn on, make the
following connections:

   *Pin 30*
         +12 Volts (Battery +)

   *Pin 87*
         Amplifiers' remote turn-on terminal

   *Pin 86*
         Head unit remote turn-on lead

   *Pin 85*
         Ground

   *Pin 87a*
         No connection (SPDT only)

 

[PhatTonyDeMarco 5,000+ posts]

stones, how do you know so much? Are you an electrician?

 

[stones 10+ year member]

stones, how do you know so much? Are you an electrician?

Lots and lots and even more trial and error, not to mention thousands of dollars.

I read alot too.

 

[chibahawk 10+ year member]

okay that part i get.. was just wondering about the connection to the battery.. hey is it worth it to get a distro block instead of wiring the relay all the way to the battery? would a distribution block even do that? also wondering what size wires im gonna end up needing

 

[creater 10+ year member]

Lots and lots and even more trial and error, not to mention thousands of dollars.I read alot too.

feelin ya mang...you learn from mistakes //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[candyman206 10+ year member]

okay that part i get.. was just wondering about the connection to the battery.. hey is it worth it to get a distro block instead of wiring the relay all the way to the battery? would a distribution block even do that? also wondering what size wires im gonna end up needing

For my relay I just took the psitive wire from the amp wire, when I tightened the power wire into the amp terminal. For the remote I to the HU remote and put it on the relay. Then the terminal on the realy that is suppose to turn into the remote turn on leadI hooked up a terminal strip from radio shack. Now, I could run anything I want becuase of the teerminal strip.

 

[stones 10+ year member]

okay that part i get.. was just wondering about the connection to the battery.. hey is it worth it to get a distro block instead of wiring the relay all the way to the battery? would a distribution block even do that? also wondering what size wires im gonna end up needing

Any constant 12volt source with over 10 amps of available current will work including the distro block.

I like 12gauge wire for the relay power wire, The most common relays are rated for 30 amps maximum current so a large wire is not needed and you will most likely use less then 10amps of current for all your accessory's combined.

 

[chibahawk 10+ year member]

well talking about any 12volt source.. could you make some suggestions? I just dont really wanna run another wire to my battery =].. i think it would be better for me to look into alternate means, i may also buy an amp in the future for my components and i would rather have the wiring only needing to be worked on in the trunk..

 

[jujumantb 10+ year member]

well talking about any 12volt source.. could you make some suggestions? I just dont really wanna run another wire to my battery =].. i think it would be better for me to look into alternate means, i may also buy an amp in the future for my components and i would rather have the wiring only needing to be worked on in the trunk..

You could just hook another wire into the + terminal of your amp (be sure to fuse though!)

 

[chibahawk 10+ year member]

ahh i have a question about a distro block now.. im not sure how the wiring would work on one

if i get a block with 0awg input and 4awg output is this meaning that im running my 0awg from my battery --> to the block and then 4awg to my amp? i want 0awg straight to my amp.. or do i run my 0awg from battery to amp... and then a different wire from that amp to the block?

 

[chibahawk 10+ year member]

You could just hook another wire into the + terminal of your amp (be sure to fuse though!)

Ohhhhhh I could just run wire from my amp to the relay? K, that sounds easier - now fusing that wire would I use a fuse that matchs the relay or the amp?

 

[jujumantb 10+ year member]

ahh i have a question about a distro block now.. im not sure how the wiring would work on one
if i get a block with 0awg input and 4awg output is this meaning that im running my 0awg from my battery --> to the block and then 4awg to my amp? i want 0awg straight to my amp.. or do i run my 0awg from battery to amp... and then a different wire from that amp to the block?

You dont need a distro block unless you have multiple amps, just run the 0 straight to the amp.

 

[chibahawk 10+ year member]

yep but thats the thing i figure ill end up with another amp at some point for my components so i was just stinkin about it