AndyG Posted June 12, 2009 Share Posted June 12, 2009 Does anyone have any guide as to how i wire a manual swith for the Rad fan on a K series? Andy Tantrum the Original Link to comment Share on other sites More sharing options...
jj48 Posted June 12, 2009 Share Posted June 12, 2009 Hi Andy Not to many parts required- 4 pin relay Switch and possible warning light Wire and in line fuse holder-make sure correct amp wire is used Elec connectors and crimpers Relay will need- 12v supply from battery and in line fuse Supply from ign switch Earth- i always solder earth connoctions as can be source of corrosion over time Feed to original supply to fan Sussex Swede R400 Link to comment Share on other sites More sharing options...
jj48 Posted June 12, 2009 Share Posted June 12, 2009 Sorry pressed wrong button so as continued- Supply to switch and then to warning light - you can use switch to supply relay with power- warning light needs to be earthed as well Richard Sussex Swede R400 Link to comment Share on other sites More sharing options...
AndyG Posted June 12, 2009 Author Share Posted June 12, 2009 Bit confused Thankyou for the help but I am a total numpty with this sort of thing. I take a wire from the power on the ign, via a relay and in line fuse to the fan Same with Earth. Wont this make the fan come on as soon as i turn on ign? Where does the switch go? Sorry, but i must have misunderstood something. Andyg Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted June 12, 2009 Share Posted June 12, 2009 The switch is used to energise the coil of the relay. The relay switches the heavy-duty supply to the fan ! Link to comment Share on other sites More sharing options...
DaveMorris Posted June 12, 2009 Share Posted June 12, 2009 I'm reaonably confident that .. .. On the relay you have 4 terminals. 85 and 86 energise the coil which pulls in the "switch" in the relay - so .. .. Wire from ignition to switch. Wire from switch to terminal 85 on the relay (relay should be sited near to the fan so that low current flow is in the long wire, high current flow is via a small lenth of wire - hence less voltage drop, generally speaking). (OPTIONAL - wire from terminal switch output terminal (the one that you have connected to terminal 85) to indicator light, thence to earth (this to show if the fan switch is on) - though if you are using the "heater fan" switch this is built in) Terminal 86 - to a good earth Terminal 30 on the relay takes the BIG power supply from the battery or spliced in from the normal fan feed wire. This needs to be fused if it isn't already. Terminal 87 goes to the fan (along with the wire that comes from the rad switch) I think that about covers it Dave Link to comment Share on other sites More sharing options...
DaveMorris Posted June 12, 2009 Share Posted June 12, 2009 Alternatively, make contact with Richard Price in Newcastle under Lyme and he'll provide better, more detailed info. Dave Link to comment Share on other sites More sharing options...
Englishmaninwales Posted June 12, 2009 Share Posted June 12, 2009 Or see here, scroll down to the bottom of the page. Malcolm Link to comment Share on other sites More sharing options...
DaveMorris Posted June 12, 2009 Share Posted June 12, 2009 Malcolm - you spoil all the fun (and could have saved sooooooo much typing) 😬 Link to comment Share on other sites More sharing options...
Englishmaninwales Posted June 12, 2009 Share Posted June 12, 2009 Dave Link to comment Share on other sites More sharing options...
DaveMorris Posted June 12, 2009 Share Posted June 12, 2009 to you too. NOt seen you around for ages. Been cutting the grass again ? (Andy - sorry for the minor hi-jack - but I think we've answered your question ) Link to comment Share on other sites More sharing options...
Englishmaninwales Posted June 12, 2009 Share Posted June 12, 2009 BaT at Anglesey today for an afternoon session on the International circuit, so the grass is long Malcolm Link to comment Share on other sites More sharing options...
Myles Posted June 13, 2009 Share Posted June 13, 2009 (and could have saved sooooooo much typing) Saved me going off and finding the link on my site though Must get search working again - the workaround is to click the 'What's on this site' link and hope that the captions are meaningful. Sorry! 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 Alcester Racing 7s Ecosse™ 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 Alcester-Racing-Sevens.com Link to comment Share on other sites More sharing options...
AndyG Posted June 15, 2009 Author Share Posted June 15, 2009 Many thanks guys, now i understand what a relay does Next weekends job will be to fit one Tantrum the Original Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now