Chippy
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| posted on 14/4/06 at 07:29 PM |
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Fan switch wiring ???
Hi All, does anybody happen to know the correct wiring for the fan switch. I have wired it to control the live feed to the relay, but I'm not
sure if this is correct
 
fan switch
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Deckman001
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| posted on 14/4/06 at 07:44 PM |
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I beleive you can get away with doing it either way, switching live or neutral, but most people switch the neutral 
Jason
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shortie
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| posted on 14/4/06 at 08:37 PM |
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This is how I have done it and it seems fine.
http://www.shortshouse.co.uk/Indyblade_Wiring_v20.pdf
HTH,
Rich.
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Chippy
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| posted on 14/4/06 at 09:45 PM |
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Hi shortie, can't open your file, I don't seem to support the format that you are using. atb Chippy
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wilkingj
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| posted on 14/4/06 at 09:55 PM |
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ALWAYS switch the live / feed side. If the device develops a fault, you have already isolated the supply at the switch. If you switch the return /
earth side, the device is live all the time, and in the event of a fault developing, you could end up with a fire.
Never switch the earth / return side, unless absolutley necessary / or if its unaviodable.
Same reason as to why you put fuses in the live feed side, to disconnect the power in the event of a fault.
You know it makes sense.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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Chippy
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| posted on 14/4/06 at 10:37 PM |
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Hi wilkingj, so it would seem that the way that I have done it is correct, many thanks. Chippy
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shortie
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| posted on 15/4/06 at 07:43 AM |
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Hi mate,
The file is adobe acrobat format, you can get the viewer here http://www.adobe.co.uk/products/acrobat/readstep2.html
Used for loads of stuff on the web and lets you re-size\zoom etc.
Rich.
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darrens
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| posted on 15/4/06 at 08:16 AM |
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Should always switch the live for stated reasons above.
Fused (small rating) live to the stat, from the stat to 86 of the relay, 85 to gnd.
Fused live (rated high) to 30 of relay and then from 87 of the realy to positive side of the rad fan, obviously other terminal of the fan to gnd.
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bob
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| posted on 15/4/06 at 02:44 PM |
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http://www.locostbuilders.co.uk/viewthread.php?tid=22368
Try the above and scroll down to indykids version,i used this with an over ride switch to get the fan on early in summer traffic.
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C10CoryM
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| posted on 15/4/06 at 04:58 PM |
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I prefer to switch the ground side. That way you run less wires (less weight and less cost  ), and you can easily run a manual switch in dash.
Looks like Bob and Indykid have it the way I like, except for that fact that no fuses have been drawn in :p .
Almost all new cars switch the grounds to reduce the amount of live wires running through modules. Also, if I remember right there is some theory
about the switches sparking less if on the ground side. Makes them last longer.
The fire prevention aspect is the fuses job. If the live side shorts, the fuse will pop. The switch should not have anything to do with it.
"Our watchword evermore shall be: The Maple Leaf Forever!"
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bob
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| posted on 15/4/06 at 05:51 PM |
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live feed is fused with a 10amp inline before the relay
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