Safe to do?

[mikemikemike 10+ year member]

Is safe to run a relay off the remote wire of the amp to power two computer fans to cool the amp?

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[*SlappinAzz*]

I wouldn't....

 

[ramos 5,000+ posts]

I doubt it, turn on lead doesn't carry much current at all. If you want the fans on constantly when the amps are on. Wire the turn on lead to the relay to turn it off and on. THen the relay needs constant 12v, a ground, and wire going to the fans. This will turn the fans on everytime your amps come on. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

If you want to be able to turn them on and off independantly of the amps just replace the turn on input lead with another 12v lead with a switch. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mikemikemike 10+ year member]

I doubt it, turn on lead doesn't carry much current at all. If you want the fans on constantly when the amps are on. Wire the turn on lead to the relay to turn it off and on. THen the relay needs constant 12v, a ground, and wire going to the fans. This will turn the fans on everytime your amps come on. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

No offense but this post isn't making much sense, it sounds like your mixing a bunch of ideas into one.

 

[ramos 5,000+ posts]

No offense but this post isn't making much sense, it sounds like your mixing a bunch of ideas into one.

None taken //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Single idea with a bunch of wires to one relay. Maybe a picture will be better ?

what I was saying is don't wire the fans directly to the turn on lead. Turn on lead doesn't carry enough current, and the circut itself is not designed to carry much current at all. You can use the turn on lead as the trigger switch to open and closethe relay, but you will need to run another fused 12 volt wire to power the fans along with a ground wire for the relay itself. Make sense ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mossberg385t 10+ year member]

None taken //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Single idea with a bunch of wires to one relay. Maybe a picture will be better ?

what I was saying is don't wire the fans directly to the turn on lead. Turn on lead doesn't carry enough current, and the circut itself is not designed to carry much current at all. You can use the turn on lead as the trigger switch to open and closethe relay, but you will need to run another fused 12 volt wire to power the fans along with a ground wire for the relay itself. Make sense ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

indeed

 

[mikemikemike 10+ year member]

100% ramos. Thank you very much (post thanked) for your help. One last question, would you advise against wiring the relay to the amps positive terminal/12v power source with a fuse installed inbetween? The fans are both 12v

 

[ramos 5,000+ posts]

I wouldn't just to be on the safe side. You might run a chance of inducing noise into the system. Not saying it will 100% of the time, but I have heard a couple systems wired like this, that had whine everytime the fans came on. I removed the wiring from the amps, used a cheap distro block to seperate the power wires. Poof the whine was gone. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mikemikemike 10+ year member]

lol from one question to another (sorry), what do I do about the extreme difference in wire gauge with the distro block? ALSO just noticed the picture shows a 12v source going to the amps remote? That doesnt seem right to me.

 

[ramos 5,000+ posts]

TIny wire for the relay? I usually just strip an extra inch or so off the wire, and fold it over itself. this gives the distro block something to bite onto and hold the wire in place.

Just disregard the turn on leads. That's the only diagram I could find quickly lol. When people use multiple amps, it's usally better to be on the safe side and use a relay to turn them all on instead of wiring them all to the head unit. A relay can handle and arse ton more current than the turn on lead from a head unit

Just so happens the wiring of the relay is the same for that and what you want to do //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mikemikemike 10+ year member]

Shame on me for not looking when it was installed, but I just noticed that no spacers (risers) were installed so the amp was just sitting on the seats carpet (fans are on hold for now)... Explains the heat, how big (long) of spacers should I create, IOW how high off the carpet should it be?