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Location:
Brisbane
Registered:
December 2002
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wiring relays
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Sun, 05 January 2003 09:32
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How do i wire up a relay for two electric fans on a car? Ive a toyota relay...dont know how to wire the thing tho. Anyone know any general diagrams or something?
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 09:42
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Where abouts in brisbane are you? You could always pop around and I could help you out!
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Sun, 05 January 2003 11:26
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Im at hawthorne. Im looking to wire the fans to a relay to stop risk of burning out the fan motors. I want to connect one of the fans to a switch in the car and the other to the ignition.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 11:32
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Wouldn't it be best to wire the relay to the standard thermo switch! And then have the fans connected to the relay! That way they still work like factory items!
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Sun, 05 January 2003 11:34
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The ma61 came out with a clutch fan stock. So no thermo switch anywhere. The only electric fan was for a/c...
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 11:38
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Well its not that hard to fit a thermo switch anyway! This is by far the best way to do things!
But you can wire the relay up to the ignition and have the fans connected to the relay so both fans run when you start the engine! Just make sure you dont have the ignition on without the engine for to long!
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Location:
Canberra
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 12:09
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There should be a diagram moulded into the plastic relay casing. This will list each of the relay terminals with a number that is also moulded next to each terminal.
You need to have them wired as following, if the pins have standard numbers:
30: Ignition 12V
87: Thermo fan positive wire
86: Ignition 12V (can tap into wire for pin 30)
85: Dash switch
The other side of the dash switch can go straight to the body of the car, anywhere that is a reasonable ground/earth point. when you flick the switch it will ground the coil in the relay, bringing the contacts together for the 12V feed to the thermo fan. You could probably have one relay per fan if you want, and can just split the wire from your switch to each relay. At least this way if a relay fu(ks up you will still have one fan working.
All advice happily given, but no responsibility taken! 
Cheers
Phil
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Sun, 05 January 2003 12:22
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Nah theres no moulding on the side of the relay...damn...do you know if its safe for me to run the fans for a couple of days...prob about 1.5 hrs between morn and arf...without a relay?? the toyota one is strange...we can make it click in but cant get the fucken output working. I think ill just buy one from supercheap with a diagram...r the supercheap ones ok?
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 12:32
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Most relays are made by the same place belive it or not!
Depending on where you wire the fans to without the relay will depend on how safe it will be!
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Sun, 05 January 2003 12:45
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straight to the battery, and ghround on the body...
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 13:13
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There is nothing wrong with that! Of course you'll be using a switch?
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Sun, 05 January 2003 13:28
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yeah when i take it to someone to wire it up properly...for the time being it will be opening the bonnet to turn the things on...
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: wiring relays
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Sun, 05 January 2003 14:10
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| ROBBO_ma61 wrote on Sun, 05 January 2003 23:28 |
yeah when i take it to someone to wire it up properly...
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Do you mean paying someone to do it? If so bring it to me! I'll do it for less than anyone else will!
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Location:
1st street on the right
Registered:
November 2002
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Re: wiring relays
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Mon, 06 January 2003 04:29
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Is this the toyota relay labeled as a "blower relay" or "main"? located in most fuse boxes. I'm using a mx73 fuse box in my ms55 and using the "main" relay for the fans.In this situation they have only one common power input and are earth switched. If you can make it click it should be working. There are four terminals as normal. In the original fuse box they are 3: power in, 11 & 12, one of these is the switching wire and the other the output (sorry I didnt feel like dismantling it again to check). But if you can make it click, it should be working.
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Location:
Brisbane
Registered:
December 2002
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Re: wiring relays
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Mon, 06 January 2003 10:55
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ill see what i have time to do this week...got a fair bit goin on...i will prob take it to an auto elec next week.
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