relay on radiator fans - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 8th May 2008, 07:07 AM   #1
Clipped is offline Clipped  Thailand
diyAudio Member
 
Join Date: Mar 2005
Location: home
Send a message via MSN to Clipped
Default relay on radiator fans

i need to wire up my radiator fans directly...because of air conditioning problems.

is the 30 amp bosch relay up to the task of running 2 electric radiator fans?

the stock relay doesnt say how many amps it can handle.
  Reply With Quote
Old 8th May 2008, 07:16 AM   #2
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
I would probably use 1 relay per fan. The start-up surge of the motors can be fairly high,though it is pretty short.
  Reply With Quote
Old 9th May 2008, 02:16 AM   #3
jol50 is offline jol50  United States
diyAudio Member
 
Join Date: Nov 2007
Some cars have multi speed fans, low for AC in traffic and high for when car gets too hot I think it is. If you are into that stuff you can swap one into there. If yours runs real hard when on, they really suck on the alternator if you run them all the time. Or maybe a large resistor of some kind to slow it down.
  Reply With Quote
Old 9th May 2008, 06:01 AM   #4
diyAudio Member
 
Join Date: Mar 2007
if the turn on surge of both fans at the same time is a bit much for your electrical system, you can build a simple delay circuit with a resistor, and a cap to delay the second fan until after the first one has started.
__________________
If it ain't broke Don't fix it
  Reply With Quote
Old 11th May 2008, 06:21 AM   #5
Clipped is offline Clipped  Thailand
diyAudio Member
 
Join Date: Mar 2005
Location: home
Send a message via MSN to Clipped
good ideas... my radiator busted and the fans wouldnt turn on, the culprit was the plugs that actually plug into the fan...so i wired some connectors straigt to the plugs and dropped glue inside the housing to secure it.

but i still went ahead and hard wired a relay to the fans to turn them on...i think i may even have a counterfeit relay... there are two '87' terminals...no 87a...and they both come on at the same time regardless.

right now i have one relay powering both fans but will add another relay just for safety precautions.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Radiohead Fans here? weissi Music 7 10th September 2004 01:08 AM
amp fans sriegel Pass Labs 4 5th January 2002 11:10 PM


New To Site? Need Help?

All times are GMT. The time now is 11:39 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2