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Unread 07-09-2013, 12:21 PM   #1
VaCJ79
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fan wiring help

I know this has been covered but I need some help.

I installed dual fans and made my own wiring setup. These are not contour fans. The fans run but I think I did not wire everything up correctly. So before I break something I just wanted to get some input.

I have the fans wired via the following...

Power : starter solenoid - to breakers - to relays - to each fan
Key 12 v : C on starter solenoid - relays - to fan (not sure if this correct)
grounds : connected to battery via dedicated ground post

Thanks

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Unread 07-09-2013, 02:25 PM   #2
LumpyGrits
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I wouldn't 'slave' off the s'solenoid, run a separate one.
What gauge wire did you use? What amperage on the 'breakers'?
IF, they run when the engine is cranking. That's NOT good.......
LG
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Unread 07-09-2013, 03:01 PM   #3
VaCJ79
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They do run when the engine cranks.

this is what I have .... Where should I attach the yellow wire?
fanwiring.png

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Unread 07-09-2013, 03:11 PM   #4
Redmanchew
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I used one of the red/ key on wires from the fuse block (don't remember which) I think it was the cigarette lighter passed that through my toggle switch to override for water and used that to trigger my relays.... other then that you are hooked up the same way I was until I wired it into temp control with an override. ( I didn't mind one fan running all the time)

My only other suggestion is to put 2 toggles in line leave one on and one off and only use the 2nd one for when your crawling or its really hot. this is basically what led me to redoing everything.

I used leftover 10ga car stereo wire (red and black) for my feeds since the strand count was SOOOOOOOOOOOOO much higher then standard stranded.

and BTW if the engine is warm enough mine run when I crank and I haven't had any issues.
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Quote:
Originally Posted by twoleos617 View Post
To reiterate for the 1,067th time, when towing...
remove rear axle, xfer in N, trans in 5th, remove neg batt cable, key to Run and go??
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Unread 07-09-2013, 03:30 PM   #5
LumpyGrits
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You don't have them hooked up to a temperature probe to turn on at a set temp??
The lower DCV to your starter and your fan motor's while crank'n, ain't good for'em.........
AGAIN, what gauge/type of wire did you use?
LG
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Unread 07-09-2013, 04:06 PM   #6
VaCJ79
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The gray wire goes to the temp probe and the wire sizes that are listed in the diagram are what I used
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Unread 07-09-2013, 04:13 PM   #7
Redmanchew
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Dude get off his rear and read the schematic he provided and quit padding.... help if your going to just don't keep posting the same thing over and over.
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1982 CJ-7 2003 4.3 chevy vortec, 4L60E, Clocked Dana 300 35 x 12.5 x 15 KM2 on Cragar 399's. Vanco Brake Booster. Power steering conversion. Warn front and rear bumpers with swing away. Moser 1 piece rears. Rear OX.

Support your local MS foundation. You don't know how much this disease sucks until it affects someone you love.

http://main.nationalmssociety.org/si...al&fr_id=18331

Quote:
Originally Posted by twoleos617 View Post
To reiterate for the 1,067th time, when towing...
remove rear axle, xfer in N, trans in 5th, remove neg batt cable, key to Run and go??
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Unread 07-09-2013, 04:16 PM   #8
LumpyGrits
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Good deal on using the correct ga, sizes. MANY, don't.
You want the fans to run in the run position of your ign. switch. Not on the start position. Someday, you will need every bit of 'juice' that battery has left to start.
Also, have a kill switch under the hood just in case.
LG
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Unread 07-09-2013, 04:26 PM   #9
LumpyGrits
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Quote:
Originally Posted by Redmanchew View Post
Dude get off his rear and read the schematic he provided and quit padding.... help if your going to just don't keep posting the same thing over and over.
Have'n a tough day there, little guy
Carry on.......IF, you can,
LG
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Unread 07-09-2013, 04:38 PM   #10
Redmanchew
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no actually just got off the range (always makes me happy) and came back in to see if matt needed any more info (yes I know him) and all you were offering were questions that he already posted answers to...

untwist your panties and support the forum....
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1982 CJ-7 2003 4.3 chevy vortec, 4L60E, Clocked Dana 300 35 x 12.5 x 15 KM2 on Cragar 399's. Vanco Brake Booster. Power steering conversion. Warn front and rear bumpers with swing away. Moser 1 piece rears. Rear OX.

Support your local MS foundation. You don't know how much this disease sucks until it affects someone you love.

http://main.nationalmssociety.org/si...al&fr_id=18331

Quote:
Originally Posted by twoleos617 View Post
To reiterate for the 1,067th time, when towing...
remove rear axle, xfer in N, trans in 5th, remove neg batt cable, key to Run and go??
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Unread 07-09-2013, 04:53 PM   #11
LumpyGrits
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Unread 07-09-2013, 06:48 PM   #12
VaCJ79
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Thanks mike, I have some free time tomorrow so Ill see where I can connect the yellow wire. I think I have a couple wires that don't go anywhere under the dash. I'll look and see if the parts stores have any good switches. I'll post back and let know how things go
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Unread 07-10-2013, 02:52 AM   #13
John Strenk
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Yellow wires in your diagram should be going to #86

Use the yellow accessory wire off the ignition switch, it should be off during cranking.

However these will run all the time in the Run position! Don't you want them to run only when the engine gets hot?
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Unread 07-10-2013, 10:05 AM   #14
VaCJ79
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Looked under the dash last night when I took the dog out. Only found a large red wire not connected to anything. The rest of the wires had connectors. I will look for a yellow wire today.

They should only run when the temp switch closes the circuit, 200* - 185*?
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Unread 07-10-2013, 10:12 AM   #15
John Strenk
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Is there a temp switch in the fan? I don't see any other control??
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