Wiring amp cooling fan?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=45309
Printed Date: May 14, 2025 at 1:20 AM

Topic: Wiring amp cooling fan?

Posted By: rt2party
Subject: Wiring amp cooling fan?
Date Posted: December 15, 2004 at 7:58 PM

i was wondering how you wire an amp cooling fan from the power wire for the amp? lets say you have a computer cooling muffin fan that draws 150mA @ 12VDC. what would you need to do to get it to blow but not blow up? the power wire has a 30amp fuse on it already (amp kit power wire that is powering the amp) thanks ~Ryan

Replies:

Posted By: stevdart
Date Posted: December 15, 2004 at 8:50 PM

You don't want to hook up peripherals like fans to the amp power wire. It has a ton of amps running through it, and you see that the fan only draws 15% of one amp. Use a 12 volt source, and fuse the fan wire with a 500 mA fuse. You can use the remote turn on wire with a relay, shown on the relay page here: https://www.the12volt.com/relays/page5.asp#rtol The fan will operate while the amp is on without the need for an additional switch.

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