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Dewitts Fan wiring diagram
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
Dewitts Fan wiring diagram
I just got the Dewitts fans for the C6 installed and they came with some generic wiring diagram that basically sucks for vettes. It has some sensor that's supposed to trigger the fans etc which isn't even working. I have the sensor bypassed and grounded the relays so the fans are always on so I could drive the car home from the lift I was using.
There should be a diagram of fan controls for a C6 from the computer that control fan1 and fan2 which ground the relays based on what the computer is commanding. I need to know which wires they are so I can connect the relays to them and program the new fan setup.
Update 12/17/10: Here you go - Link
Follow up on the diagram.
The green wire(cooling fan speed control) which the gray wires exiting the relays are supposed to connect to is located on the plug which used to connect to the fan controller. The plug has red, black and green wires in it. The green is a switched ground by the PCM. Since my car was set to turn the fans on at 190* the computer grounds that wire turning on your Dewitts fans.
Everything else was pretty easy to wire.
There should be a diagram of fan controls for a C6 from the computer that control fan1 and fan2 which ground the relays based on what the computer is commanding. I need to know which wires they are so I can connect the relays to them and program the new fan setup.
Update 12/17/10: Here you go - Link
Follow up on the diagram.
The green wire(cooling fan speed control) which the gray wires exiting the relays are supposed to connect to is located on the plug which used to connect to the fan controller. The plug has red, black and green wires in it. The green is a switched ground by the PCM. Since my car was set to turn the fans on at 190* the computer grounds that wire turning on your Dewitts fans.
Everything else was pretty easy to wire.
Last edited by Drewstein; Dec 18, 2010 at 12:55 AM.
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
In theroy you don't even need a controller, just to know which wires are the fan1 and fan2 control. Hook those up to the relays and presto.
I called them and what a shocker, nobody answered the phone.
Here's what it says about the kit on their site -
Compatible is misspelled which gives me confidence...
The fact it says it's not compatible is also incorrect. If anyone on here has the wiring diagram I'm asking for I'll prove it.
I called them and what a shocker, nobody answered the phone.
Here's what it says about the kit on their site -
Spals dual fan package boosts air flow up 40% from stock. This fan package only fits our Direct Fit radiators. This kit includes the necessary relay harnesses and temperature switch to operate the fans automatically. Switch turns the fans on at 195 and off at 175. This is an aftermarket add-on, and it is not compatable with the factory wiring or control system.
The fact it says it's not compatible is also incorrect. If anyone on here has the wiring diagram I'm asking for I'll prove it.
Last edited by Drewstein; Dec 10, 2010 at 01:38 PM.
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
In theroy you don't even need a controller, just to know which wires are the fan1 and fan2 control. Hook those up to the relays and presto.
I called them and what a shocker, nobody answered the phone.
Here's what it says about the kit on their site -
Compatible is misspelled which gives me confidence...
The fact it says it's not compatible is also incorrect. If anyone on here has the wiring diagram I'm asking for I'll prove it.
I called them and what a shocker, nobody answered the phone.
Here's what it says about the kit on their site -
Compatible is misspelled which gives me confidence...
The fact it says it's not compatible is also incorrect. If anyone on here has the wiring diagram I'm asking for I'll prove it.
Mike
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
I got them on the phone and they're sending me the .pdf.
I'll post it here if anyone else needs it.
-Drew
Racer
Joined: Jan 2009
Posts: 405
Likes: 1
From: SPRING CREEK NEVADA
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
Follow up on the diagram.
The green wire(cooling fan speed control) which the gray wires exiting the relays are supposed to connect to is located on the plug which used to connect to the fan controller. The plug has red, black and green wires in it. The green is a switched ground by the PCM. Since my car was set to turn the fans on at 190* the computer grounds that wire turning on your Dewitts fans.
Everything else was pretty easy to wire.
The green wire(cooling fan speed control) which the gray wires exiting the relays are supposed to connect to is located on the plug which used to connect to the fan controller. The plug has red, black and green wires in it. The green is a switched ground by the PCM. Since my car was set to turn the fans on at 190* the computer grounds that wire turning on your Dewitts fans.
Everything else was pretty easy to wire.
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Joined: Feb 2014
Posts: 99
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From: Houston Texas
I know this is an old post, but hope you can help. I installed the dual fan setup and wired in the relays according to diagram (at least I think so). The fans are not switching on. If I wire them with 87a slot (5 pin relay instead of 4) they are constant on, even with car off. Through 87 terminal they are not cutting on. Appreciate any help.
