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Discussion Starter #1
Hope someone can help here. My rad fan will not start when needed on my 07 450.
UTVINC.COM sells a fan over ride switch but I can't register on there sight. The Canadian sight UTVINC.CA dose not seem to sell this item. Does anyone know where I can purchase the over ride switch in Canada. I have installed a temperature gauge in the Rhino so I will know when to activate the fan switch. Hope someone can help and thanks in advance.
Bruce aka 1 bad rhino
 

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Where did u install the sending unit that reads the temp and sends it to the gage


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I like having an override switch. But in your case I'd want to know why it's not working properly and fix the root cause.
 

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Discussion Starter #4
heat gauge sending unit

Where did u install the sending unit that reads the temp and sends it to the gage


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I installed the sending unit right where the idiot light sending unit goes. You need an electrical heat gauge not mechanical. 1 rap of Teflon tape and away you go.
Works well
 

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Post a pic if u can. I run an alba temp gage and utv inc sending unit that actually goes on drivers side in the radiaiator line, that is where everyone puts theirs


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Discussion Starter #6
Post a pic if u can. I run an alba temp gage and utv inc sending unit that actually goes on drivers side in the radiaiator line, that is where everyone puts theirs


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I will see if I have one if will take a pic and post. You would have a mechanical gauge and that is a bigger sending unit. The electric is smaller and goes into the head on the engine. I would think that would be a more accurate as it is right at the engine.
 

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This is where I put mine like Brian said. Used an Eqqus gauge
 

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Discussion Starter #8
Over Ride switch

OK guys here is a pic of the sensor I out into the idiot light spot. I know it is a different thread but it will go in and seal. Mine has been in there and operating for almost nine months now and no problems. I used 1 rap of Teflon tape and all is good. I used a Equus electric gauge. The black wire you see is going to the gauge and the ground is the actual threads on the sensor. That is the reason for only 1 rap of Teflon tape. The hot wire goes directly to the gauge and that is it. You will see a second picture and that is where I installed the block heater for my COLD starting winters up here in Ontario. I forgot to take a pic of the gauges so I will do that as well as I installed a volt gauge as well. I am still trying to locate a fan over ride switch.
Bruce R
 

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Discussion Starter #9
Here is a pic of the gauge install. I mounted them at the base of the wind shield right in front of the steering wheel. I have no problem seeing them when driving. I forgot to mention that I got the idea of the electric water temp gauge sensor from another sight I happened on. It was a 10 year old thread on Rhino Talk.net. I just thought it made more sense to have the sensor located in the hottest place as possible.
Thanks all. Bruce Robison aka 1 bad rhino
 

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Discussion Starter #10
Here is a pic of the gauge install. I mounted them at the base of the wind shield right in front of the steering wheel. I have no problem seeing them when driving. I forgot to mention that I got the idea of the electric water temp gauge sensor from another sight I happened on. It was a 10 year old thread on Rhino Talk.net. I just thought it made more sense to have the sensor located in the hottest place as possible.
Thanks all. Bruce Robison aka 1 bad rhino
 

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Discussion Starter #12
What temp is the sensor turning the fan on?
The rad sensor is NOT telling the fan to come. That is the reason for the
FAN OVER RIDE SWITCH. have tried switching all the relays etc in the battery box and I had changed out the rad that has a new heat sensor in the rad and nothing works. So with a temperature gauge and a fan over ride switch I can start the fan when I want.
Thanks
 

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What temp is the sensor turning the fan on?
The rad sensor is NOT telling the fan to come. That is the reason for the
FAN OVER RIDE SWITCH. have tried switching all the relays etc in the battery box and I had changed out the rad that has a new heat sensor in the rad and nothing works. So with a temperature gauge and a fan over ride switch I can start the fan when I want.
Thanks
An override switch is a good option to have but shouldn't be the primary solution for engine temp control. We need to figure out why your fan isn't turning on as designed.

Was the fan working as designed prior to installing the new gauge/sensor? Are you getting temp readings on your new gauge? Is your OEM temp light stuck on after install? What's the temp range that triggers the sensor you installed? What is the normal position of your new sensor (off/on)?

There are a lot of past threads about how to install an override switch that you can google and they're not difficult to install. Having a switch with an LED light is helpful to know at-a-glance if the fan switch is on or not. Another useful LED to have is one that turns on anytime the fan is active.
 

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Discussion Starter #14
While trail riding 1 day the idiot light came on when the rhino got hot as the fan did not start. So I had to jimmy rig it get the fan started to cool it down. Just ran the fan wire to the aux port in the cab in order to get out of the bush without cooking the engine. It was dam close anyway but no harm was done. So now we know the fan motor does work. I then noticed the rad was leaking a bit at the bottom but that was not the problem as there was still lots of water & antifreeze in the system. I put in a new radiator which had a new temp sensor in the rad. Fan still would not start on its own. I changed a couple of the diodes I guess they are called in the battery box and it still does not come on its own. Then I installed the electric temp gauge and the sensor goes in the head where the idiot light sensor was installed, so now the idiot light is eliminated. I also have a heater rad in the cab for heat in the winter. So now when the water temp gauge gets up to 180 to 200 I can start the heater fan and it will cool the water down BUT it will get hotter than hell in the cab so therefore I need a fan over ride switch to start the fan at the radiator. It would be more convenient to me rather than plugging into the aux port.
I cant find the problem so it would be easier for me with a over ride switch.
I haven't been able to find a plug and play switch hear as yet.
Thanks for your interest. Bruce
 

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Not much plug-n-play stuff available for Rhinos anymore.

You can wire one up yourself for the cost of a relay and switch.

85 - ground
86 - switch on the dash with 12v power to turn on and off the relay
87 - blue wire on rad fan - use a wire tap
30 - fused 12v power from battery
 

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Discussion Starter #16
not much plug-n-play stuff available for rhinos anymore.

You can wire one up yourself for the cost of a relay and switch.

85 - ground
86 - switch on the dash with 12v power to turn on and off the relay
87 - blue wire on rad fan - use a wire tap
30 - fused 12v power from battery
thank you sir.
 

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Discussion Starter #17
1 more thing HIGHDEZRHINO if you would. I found an old thread from 04-19-2012 by a chap
names SteveS on the stock thermal breaker on my 07 450. I believe it is in a plastic pouch in the battery case. He says to replace it with self setting circuit breaker which I am going to try as it may be bad. The pic shows 2 type one breakers 1 is blue with spade type connectors 8 or 10 amp.
The other pic is crossed out which is metal with stud type connectors. The one I picked up is the metal type with the stud type connectors and is 20 amp. The is the only one I could get. My question is can I use the 20 amp stud type or not. I am going to try this before I get the over ride switch as per your advice.
Thanks Bruce aka 1 bad rhino
 

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Discussion Starter #18
OK so here is what I did today. Eliminated the plastic pouch thermal breaker and added a type 20 amp automotive breaker. Ran the rhino up to 212 degrees and the fan still would not start so I had to turn on the interior heater to cool it down. Then changed out the 2 black breakers in the battery box and ran it up again to 212 degrees and it still would not start the fan so had to turn on heater again to cool it down. All fuses are good so what the hell is wrong. Any suggestions.
 

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OK so here is what I did today. Eliminated the plastic pouch thermal breaker and added a type 20 amp automotive breaker. Ran the rhino up to 212 degrees and the fan still would not start so I had to turn on the interior heater to cool it down. Then changed out the 2 black breakers in the battery box and ran it up again to 212 degrees and it still would not start the fan so had to turn on heater again to cool it down. All fuses are good so what the hell is wrong. Any suggestions.

Have you tried applying power (AND ground) directly to the fan to see if it works?
 

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Discussion Starter #20
The fan does work. Have it hooked up to the auxiliary plug in in the cab. I plug it in when the gauge gets up to 180 to 200 degrees. If I cant find the problem I will install a fan over ride switch. Any idea what temp the stock fan should kick on at.
Thanks Bruce
 
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