Davemate Posted December 30, 2011 Share Posted December 30, 2011 i am looking for a rad fan switch, i did buy one but it has a 22mm thread so its too big for me to use in the stat housing.i need one with a 16mm thread with 92 ---87 degrees.does anyone know a part number or what car i need one from ?it would so simple to just ask for a switch for a modern whatever !the chap who sold me the one i got sent me this listing but my local car spares cant get any of the ones i wanthttp://www.ferrarilife.com/library/view_article.php?id=16editjust found one on ebay with other car listings honda accord (1984--)honda civic(1975-1991)triumph acclaimrover 213 all the same part number Link to comment Share on other sites More sharing options...
Nick Moore Posted December 30, 2011 Share Posted December 30, 2011 An alternative would be to get a 22 x 1.5mm boss brazed to your radiator top tank? Link to comment Share on other sites More sharing options...
Davemate Posted December 30, 2011 Author Share Posted December 30, 2011 Nick_Moore wrote:An alternative would be to get a 22 x 1.5mm boss brazed to your radiator top tank?Nick,If I had not found the Honda one,then that was my next move. Link to comment Share on other sites More sharing options...
Davemate Posted December 31, 2011 Author Share Posted December 31, 2011 Can someone confirm this setup is ok to use,I would like to have a tell tale light so I know when the fan is on,along with an overide switch. Link to comment Share on other sites More sharing options...
Jordon T Posted December 31, 2011 Share Posted December 31, 2011 Thats the way i would have wired in a fan in, if it was on my car. :) Link to comment Share on other sites More sharing options...
drofgum Posted December 31, 2011 Share Posted December 31, 2011 Davemate,The only difference to what I use is that mine has the tell-tale light connected to the relay with the fan wire so I know that the relay did turn on. Cheers, Paul Link to comment Share on other sites More sharing options...
Davemate Posted December 31, 2011 Author Share Posted December 31, 2011 Paul, I like my way,its a good way. Your idea unfortunately(for me) is much better :( ;)So i will do it your way,I was going to mount the relay down on the rad near the temp switch but now I will mount it up on the bulkhead to save the amount of wire to be run from my fuse box down to the front Like you said it will prove that the fan is on instead of just proving that a feed is going to the relay but mayby no further !DaveRevised diagram Link to comment Share on other sites More sharing options...
uksnatcher Posted January 2, 2012 Share Posted January 2, 2012 Dave, my 2ps worth mate.I ran the earth from the fan back to the battery rather than using the chassis earth, depends on the power(amps) the fan you have uses, mine is off a Vauxhaul Corsa, powerful little beast and dimmed the headlamps/dash lights and turned the CD player off when the fan kicked in when using the chassis earth.The tell tale lamp will illuminate even when the fan isnt powered when you are on the move as the fan blades are spinning by airflow past the blades as the fan motor becomes a dynamo, you will need to add some electronicatrickery bit to stop this, not sure what, i am sure somebody will come in on this.I didnt bother with a tell tale lamp, just the override switch which i flick on in hot summer traffic or after a motorway run, sort of second nature to reach for the switch now.Also in this cold weather the fan hardly ever comes on, bear this in mind when you are installing the thermo switch. Link to comment Share on other sites More sharing options...
TimW Posted January 3, 2012 Share Posted January 3, 2012 Why would anyone bother with an override switch if you have a thermo switch installed????????????? Link to comment Share on other sites More sharing options...
Davemate Posted January 3, 2012 Author Share Posted January 3, 2012 339 wrote:Why would anyone bother with an override switch if you have a thermo switch installed?????????????What if it broke/stopped working !Question about wiring On the fan there is a sticker that says "12v 80wSo ----80w ~ 12v = 6.6amp ?(that is how it's worked out isn't it) can I use 8amp wire for the supply for the fan It's just I have a roll and it would save me having to buy another. Link to comment Share on other sites More sharing options...
Nick Moore Posted January 3, 2012 Share Posted January 3, 2012 1344 wrote:What if it broke/stopped working?That's what mine did, when I started using the car for commuter service. One day the fan didn't kick in. I noticed the temperature going past 95C, saw that the fan light hadn't come on and hit the override. The switch has now been replaced, and I have a spare in case the new one doesn't last. Link to comment Share on other sites More sharing options...
Rumpith Posted January 13, 2012 Share Posted January 13, 2012 I have a T-piece in the top hose, which has a 22mm threaded inlet for the thermoswitch... Link to comment Share on other sites More sharing options...
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