A Way to Test the Fan Switch?? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Engine / Exhaust / Cooling
\ From the radiator, through the case and out
the exhaust. If it has to do with the cooling,
engine or exhaust, discuss it here!

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 05-03-2007, 07:55 PM Thread Starter
Members who have donated towards server costs
93VN750's Avatar
Join Date: May 2006
Location: Tampa, Florida
Posts: 1,766
iTrader: (2)
Send a message via Skype™ to 93VN750
A Way to Test the Fan Switch??

It's about a thousand degrees out on the way home. Sitting in traffic and temp is heading past the half way mark. Lean over and look and the fan is not moving.

Thankfully things sped up and I was able to cool it down.

Got home removed fan lead from switch and grounded it and the fan came right on. So, most likely problem is the switch. The connectors on both the wire and the switch are pretty corroded, so I will clean them up first.

I have another radiator with a switch in it kicking around. Before I drain my radiator to replace the probable bad switch with one of unknown health, I thought I would ask if anyone knows how to test the switch.



93VN750, under re-construction
vn750.com Member # 828

Rick's Stator and R/R
MF AGM Battery
Shaved & Jetted
MAC Tapered Staggered Pipes
Battery/Temp/Clock Gauge
Stainless Steel Brake Lines
Dunlop D-404's
23,XXX miles and holding pending gasket change (underway!!!)
93VN750 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 05-03-2007, 08:10 PM
Ccspinner's Avatar
Join Date: Feb 2006
Location: Chicago land
Posts: 2,576
iTrader: (9)
Send a message via Yahoo to Ccspinner
You can check for continuity on the switch, Start the bike let it get warm and check again.
When the switch gets warm continuity will allow groung to go through the switch.
If you have the switch out you can use hot water in a pan and do the same.

Chad Falstad "Hawk"
Vroc #17649
2011 HD Ultra Classic "angel"
2001 Nomad 1500 Sold March 2012
2001 VN 750 "Sold June with 2008 with 21,000""Serinity"
Ccspinner is offline  
post #3 of 3 (permalink) Old 05-07-2007, 10:49 PM
Members who have donated towards server costs
Sky Rider's Avatar
Join Date: Jun 2006
Location: Corpus Christi, Texas
Posts: 1,647
iTrader: (0)
If your switch checks out good, then the problem is the relay in the junction box. I have the same problem. The relays are the back of the junction box and have a rubber backing covering them. There is no way to remove the rubber backing without partially ruining it but I have heard of some people repairing the relay. The headlight and starter relay are also in there as well.
Some people have simply bypassed the junction box and installed a manual switch as a new junction box is not cheap, $177 at bike bandit. Ayers website seems down for now? Hope yours is just the main switch at the radiator.

Jim W
93 VN 750 "Ursula"
Moved R/R 08Sep06
R/R rewire 17Feb07
New R/R, Installed 14Jun08
New Stator installed 10 Jun08
Maintenance Free Battery 12Jan08
21480 Miles
VROC #8542
Sky Rider is offline  
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome