COOLING FAN ?

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=384
Printed Date: July 30, 2025 at 2:55 PM

Topic: COOLING FAN ?

Posted By: bberman1
Subject: COOLING FAN ?
Date Posted: April 19, 2002 at 10:38 AM

I’m building three enclosed amp racks. To cool them I know I need fans, so I plan on using six fans 2 for each rack. My question is how do I hook them up? I'm afraid if I hook them up off fused block in the trunk I will get interference. Also If I hook them up to my remote turn on I will get interference. Any suggestions on how to keep my amps cool and interference free.

Replies:

Posted By: Velocity Motors
Date Posted: April 19, 2002 at 3:20 PM

I would run them off a relay where the remote turn on will activate the relay to engage the fans. Wire a relay in this configuration:

86 : GROUND
87 : Amp remote wire
85 : 12 volts + input
30 : ( + ) of the fan(s)
87a : NOT USED

The pin 85 can be wire straight to the distribution block for the amplifiers, but just to be sure you should fuse this connection.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

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