How to wire in a cooling fan override switch - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » How to wire in a cooling fan override switch

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gidged500

Premium Member

Registered: 18th Aug 09
Location: Lancashire
User status: Offline

1st Jul 11 at 08:53

Just after finding out how to wire in a override switch for my cooling fan on my Corsa b , and what parts I need thanks in advance

Jed D

Member

Registered: 15th Mar 11
Location: Durham
User status: Offline

1st Jul 11 at 09:15

i got another fog switch and put it were gsi's have the front fog switch. wired it all up under the scuttle panel, fused it etc...
mines wasn't working as the fan wasn't getting enough volts for some reason.
wasted money changing all sorts

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

1st Jul 11 at 12:02

Just put a switch in-line with the wire labeld 'switched live'

This way you'll always get enough current. Thats why yours wont have worked Jeddy.

dale87

Member

Registered: 19th Feb 06
Location: West Mids :)
User status: Offline

3rd Jul 11 at 09:06

The best way for a fan override switch imo is to just splice the brown and white wire (iirc) at the fan switch sensor (botton of rad drivers side). Then run a wire from this to a switch then from the switch to earth.

The sensor in the side of the radiator is just a switch that once a certain temp is reached it earths the circuit out and turns the fan on so all you are doing is bypassing the route to earth for the cars fan relay.

This way all wiring is still protected by the cars factory fuses and relays and the big current is kept out of the cabin so no need for heavy duty cables and 30amp switches like I've seen before lol. Also this way the switch is only ever 'armed' when the ignition is turned on. That's the way I've done it anyway.

[Edited on 03-07-2011 by dale87]

gidged500

Premium Member

Registered: 18th Aug 09
Location: Lancashire
User status: Offline

3rd Jul 11 at 13:41

That's really good and detailed info guys thank you very much for that really helps

I'm thinking of wiring the switch into the dud button next to the fog light switch ?

Jed D

Member

Registered: 15th Mar 11
Location: Durham
User status: Offline

3rd Jul 11 at 15:14

yeah just get another fog light switch out a scrapper its not hard to run the wires to it. i had to cut a little chunk out the bulk head lyk, only about 2cm. fused it under the scuttle panel too

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

4th Jul 11 at 15:14

If your not gonna use a 30amp switch as Dale suggested then you'll have to go the relay route.

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