NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #226  
Old April 21st, 2016, 13:56
fyrfytr1717 fyrfytr1717 is offline
NAXJA Forum User
 
Join Date: Jul 2008
Location: Turlock, CA
Posts: 1,674
Re: Radiator Fan Override Switch (The Easy Way)

The stray 12V+ is likely coming from the factory relay. When the ignition is on, 12V+ is being fed to one side of the factory relay's coil. It is just waiting for the other side of the coil to be grounded in order to activate.

My question would be why does the same ground that is completing the indicator light circuit not also cause the factory relay to activate? Hard to know what exactly the wiring inside the switch looks like so far as circuit isolation and/or multiple contacts goes.

Regardless, 12V+ coming to the bulb from both sides won't do anything as the circuit has no potential. When you flip the switch, pin 3 providing 12V- in place of that stray 12V+ should cause the light to turn on.
Reply With Quote
  #227  
Old April 21st, 2016, 19:28
hubs97xj's Avatar
hubs97xj hubs97xj is offline
NAXJA Forum User
 
Join Date: May 2008
Location: Fort Wayne, IN
Posts: 4,433
Re: Radiator Fan Override Switch (The Easy Way)

I have deleted the images from pbucket, so hopefully it won't get dug up much more. We're obviously years from being able to edit the posts, so sorry if it's still raining on your parade. My intention was to correct the bad info I was finding, and offer an alternative method to skin the same cat as easily. Cheers.

Last edited by hubs97xj; April 21st, 2016 at 19:32.
Reply With Quote
  #228  
Old April 24th, 2016, 00:11
fyrfytr1717 fyrfytr1717 is offline
NAXJA Forum User
 
Join Date: Jul 2008
Location: Turlock, CA
Posts: 1,674
Re: Radiator Fan Override Switch (The Easy Way)

No worries hubs, your posts have been more than helpful over the many years you've been part of . It was a perfectly acceptable wiring diagram that you posted, it's just that in this particular thread, it was confusing folks who were just skimming through and not viewing it in context. Tons of threads on here discussing the approach you drew up of which I'm hoping your now deleted picture wasn't an integral part of.
Reply With Quote
  #229  
Old August 7th, 2016, 21:51
craigbhikin craigbhikin is offline
NAXJA Forum User
 
Join Date: Aug 2016
Location: Mesa, AZ
Posts: 1
Re: Radiator Fan Override Switch (The Easy Way)

Thanks, you idea sounds better than my idea of just splicing a switch in with power and fuse. I will need to re read it again to be sure of what I am doing.
Reply With Quote
  #230  
Old December 3rd, 2016, 16:38
rixdafix rixdafix is offline
NAXJA Forum User
 
Join Date: Dec 2016
Location: Jefferson County, MO
Posts: 1
Re: Radiator Fan Override Switch (The Easy Way)

Great 6 year old write that's still helping people and inspired my first post. Did my 01 today. This mod works like a charm. I actually accessed most of the wires from inside the underneath of the distribution center. All solder and heat-shrink. Even used a switch with an LED indicator by disassembling the switch, reversing the diode leads and connecting the switches outer terminals reversed. Works like a charm. Thanks again.
Reply With Quote
  #231  
Old December 4th, 2016, 11:31
fyrfytr1717 fyrfytr1717 is offline
NAXJA Forum User
 
Join Date: Jul 2008
Location: Turlock, CA
Posts: 1,674
Re: Radiator Fan Override Switch (The Easy Way)

Glad you found it helpful rixdafix, and strong work with re-rengineering your LED switch to work!
Reply With Quote
  #232  
Old January 27th, 2017, 09:07
Coach Bruce's Avatar
Coach Bruce Coach Bruce is offline
NAXJA Forum User
 
Join Date: Sep 2015
Location: San Diego, CA
Posts: 25
Re: Radiator Fan Override Switch (The Easy Way)

Quote:
Originally Posted by rixdafix View Post
Great 6 year old write that's still helping people and inspired my first post. Did my 01 today. This mod works like a charm. I actually accessed most of the wires from inside the underneath of the distribution center. All solder and heat-shrink. Even used a switch with an LED indicator by disassembling the switch, reversing the diode leads and connecting the switches outer terminals reversed. Works like a charm. Thanks again.
I'm doing this mod today and couldn't figure out a way to get the led switch to light properly and send a neg. signal so I was going to use a second relay to switch the signal polarity under the hood. Can you explain how you modified the switch? I'm using a Carline switch from OTRATTW.
It has an independent LED for the text and a dependent LED for the symbol when activated. Any help would be appreciated.
Reply With Quote
  #233  
Old August 22nd, 2017, 08:09
3blackbirds 3blackbirds is offline
NAXJA Forum User
 
Join Date: Aug 2012
Location: Ft. Rucker
Posts: 4
Re: Radiator Fan Override Switch (The Easy Way)

I'm going to resurrect this thread, hopefully. I have a '99 with the aux fan switch wired to the battery because I got a CEL. Switch works great, but getting heat soak. Photobucket has updated their policies so I can't see the diagrams anymore on how to add in the ELK-960 timer. Can anyone provide the diagrams for the ELK-960? -Thanks
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
1st/2nd gear override switch (aw4) xj_punk Modified Tech Discussion 6 February 28th, 2009 00:06
Electric Fan OverRide Switch Jeepxj94 Modified Tech Discussion 8 May 8th, 2007 16:29
Fan override switch 97+ models Purple Modified Tech Discussion 36 March 28th, 2007 16:36
power antenna override switch andyr354 Modified Tech Discussion 8 October 17th, 2006 14:17
Gojeep Transmission Override Switch Qs nhrocker Modified Tech Discussion 3 September 5th, 2005 18:28


All times are GMT -7. The time now is 11:54.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014