Huttojb
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| posted on 25/6/17 at 11:09 AM |
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Unknown device on water coolant.
Hey gents, as you may or may not know, I'm currently re-wiring my Tiger, the previous owner basically did a rubbish job and the wiring was a
mess of wires constantly changing colours with 5-8 joins on a wire no bigger then 1000mm
Attached picture is on the water collant and seems to be o/c (open circuit) but my fan switch is attached to it. I believe it was the fan switch at a
specif temp, and I would presume that at a specific temp the switch would close allowing the fan to switch, but the previous owner has manually wired
the fan to a switch in the cockpit.
So this device seems to joined in parellel but not sure of true purpose.
Jason. http://locostbuilders.co.uk/upload/IMG_4615.JPG
Jason
 
huttojb_GenTiger
There are only 10 types of people in the world. Those that understand binary and those that don’t.
If only DEAD people understand hexadecimal - 57,005
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cliftyhanger
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| posted on 25/6/17 at 11:45 AM |
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The pic looks like a fan switch, used on VW and a bazillion other cars.
He has wired it so he has a manual over-ride that can fire up the fan early etc. Lots of classic car owners do that too, they really worry about
temps.
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Ben_Copeland
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| posted on 25/6/17 at 12:07 PM |
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I have a manual over ride on my fan, just in case.
Ben
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CosKev3
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| posted on 25/6/17 at 12:11 PM |
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Yeah I've got a over ride button too.
Handy if your sensor/controller fails,as mine did.
Also handy if you are using the car on a track etc,on your cool down lap just switch the fan on to help 
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britishtrident
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| posted on 25/6/17 at 12:47 PM |
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These switches are a standard M22 fitting used by Peugeot, Fiat, BMW VW Reanult and Volvo before they changed to giving ECU control of the fan they
are very reliable . You can get wide selection of cut in/cut out temperatures and also dual switches that allow 2 speed control of the fan using a
resistor.
Ideally you should in wire the switch as using a manual switch as the only method of switching the fan is risky --- use the dash switch as a manual
overide if you want not really required because these switches are reliable but some sort of after park-up cool down fan is a good idea -- really
essential on turbos.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Huttojb
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| posted on 27/6/17 at 10:59 AM |
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Thank you for all your answers, it's what I expected it to be. Just don't know what degrees it switches in and out at?
Jason
Jason
huttojb_GenTiger
There are only 10 types of people in the world. Those that understand binary and those that don’t.
If only DEAD people understand hexadecimal - 57,005
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cliftyhanger
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| posted on 27/6/17 at 11:12 AM |
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Usually stamped on one of the nut flats, or actually on the sensor on the bit inside the rad.
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