Fan switch question
Thread Starter
Le Mans Master
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Fan switch question
could someone please explain to me how you wire this switch to manually control fans when you want to. Also, so that it only work when the car is in run.
thanks
thanks
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: Fan switch question (C4Fetish)
Super simple.
Connect a switch to a wire that one side goes to a ground, and the other side goes into the green w/ white strip wire in the fan control relay. When the car is on, and the switch is on the fans will run. Turn off the key, the fans turn off also. You need to ground this green wire with a white strip to do it. :
Connect a switch to a wire that one side goes to a ground, and the other side goes into the green w/ white strip wire in the fan control relay. When the car is on, and the switch is on the fans will run. Turn off the key, the fans turn off also. You need to ground this green wire with a white strip to do it. :
Thread Starter
Le Mans Master
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Re: Fan switch question (scorp508)
You need to ground this green wire with a white strip to do it. :
the switch i have has 3 terminals on it. I only need 2?
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: Fan switch question (C4Fetish)
the switch i have has 3 terminals on it. I only need 2?
My switch has 3 positions, 3 terminals.
Left = Both Fans On
Middle = Both Off
Right = Auxilary Fan On, main fan stays computer controlled.
My middle terminal is the ground, and the other two are for the fans.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: Fan switch question (C4Fetish)
With that switch, I think it would be best (probably doesn't matter) to use the accessory and power terminals. Run a lead from accessory to the green w/white wire on the fan relay, and a lead from power to ground.
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Fan switch question (scorp508)
He is talking about a single pole double throw switch. The function is to connect either of two posts to a common post. This switch may or may not have a center off position. You have to know what you are doing, or don't do it.
That switch could be used to ground a single relay, or either of two relays; depends how you wire it.
Forget what switch you have they are cheap. What do you want to do? The fans can be controlled by grounding the relay(s). Since the relays are powered by source that is controlled by the ingnition, they will only work when the key is on. This of course can also be changed.
You need to figure out what you want to accomplish, I urge you not to start messing around unless you understand what you are doing.
Good Luck,
Pete
That switch could be used to ground a single relay, or either of two relays; depends how you wire it.
Forget what switch you have they are cheap. What do you want to do? The fans can be controlled by grounding the relay(s). Since the relays are powered by source that is controlled by the ingnition, they will only work when the key is on. This of course can also be changed.
You need to figure out what you want to accomplish, I urge you not to start messing around unless you understand what you are doing.
Good Luck,
Pete
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