Radiator fan over ride switch help wheres this go?

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Radiator fan over ride switch help wheres this go?

Post by Fuzzydoguk on Sun May 01, 2011 10:52 pm

Hi all
trying to fit an overide switch for the radiator fan, can anyone shed some light on how to do this, idealy can any one show me some photos of where I need to connect the wires to the dashmounted swich please?

Thanks as always

James

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Re: Radiator fan over ride switch help wheres this go?

Post by rich the mechanic on Mon May 02, 2011 7:37 am

Hi if you are using a heavy duty switch then connect a heavy duty wire to each of the two that come out of the rad temp sensor at the bottom, back of the rad or you need to use a relay across those two wires and then you need a power ideally from the ignition I think I got mine from the cigarette lighter socket and through the switch to the relay and on to earth. I originally just used the switch but it has quite a lot of load and the lightish weight wireing I used was getting hot.
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Re: Radiator fan over ride switch help wheres this go?

Post by Fuzzydoguk on Mon May 02, 2011 10:04 pm

Thanks for this, I have a heavy duty switch and cable so I should just attach the cables to the where the current cables go into the rad fan or am I looking for something else?

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Re: Radiator fan over ride switch help wheres this go?

Post by rich the mechanic on Wed May 04, 2011 7:17 am

I just spliced them in one to each wire as the rad switch can still kick the fan in if you haven't noticed the temp go up.
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Re: Radiator fan over ride switch help wheres this go?

Post by Fuzzydoguk on Wed May 04, 2011 6:32 pm

Being so dumb here, the Rad switch - where is it? any chance some one could post a pic so I can find it?!?!

Thanks

James

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Re: Radiator fan over ride switch help wheres this go?

Post by rich the mechanic on Thu May 05, 2011 7:55 pm

if you lay under the front of the van so you can see the back of the rad its the wires at the bottom next to the water pipe sorry for the dodgy pics it was only to show trhwe repair I had made.
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