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02-08-2010, 07:45 AM
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#76
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Registered User
Join Date: Dec 2009
Location: Louisville, KY
Posts: 15
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Quote:
Originally Posted by Holder350
Yes an incandescent bulb works no matter which way the bulb is powered, a LED is much different.
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ah. ok thanks for the help. much appreciated.
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02-18-2010, 07:49 PM
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#77
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Registered User
Join Date: Jan 2009
Location: Boise, ID for now
Posts: 1,416
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Ok I tapped into the wire and it works, just it's opposite of what I want it to do. When the switch is off it turns the fan on but when I flip the switch on it turns it off.
I have a wire going to "ground" and the tapped wire going to "load". I also have a "supply" prong on there too. The switch has an LED on it. So what do I do to get the switch to work correctly. Also after tapping the wire it kicked on the check engine light. 
__________________
_=====ooooo
//__l_l_,\____\,_____
l_/-\_l__l_/-\_|lllllll |
_\_/==== |; _\\ \\_|;
_(o)_)___(o)_)-- o-)_)
96 Jeep Cherokee 4" lift with 32" KM2's
94 Jeep Cherokee 3" lift with 29's!
JEEP Just Empty Every Pocket my life moto. :)
White Jeep Club Member #109
Jessie The Jeep (lots of pics)
Quote:
Originally Posted by aircruiser
But yeah my 4.0 has been hydrolocked twice, ran upside down for 7 seconds it still keeps coming back for more. its like that crazy ex-girlfriend that just wont quit..but unlike her, its a good thing haha
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02-18-2010, 09:20 PM
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#78
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Captain 400k
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,000
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Quote:
Originally Posted by JeepSpeed18
Ok I tapped into the wire and it works, just it's opposite of what I want it to do. When the switch is off it turns the fan on but when I flip the switch on it turns it off.
I have a wire going to "ground" and the tapped wire going to "load". I also have a "supply" prong on there too. The switch has an LED on it. So what do I do to get the switch to work correctly. Also after tapping the wire it kicked on the check engine light. |
Rotate the switch 180 
The LED in the switch is wired in reverse, because it's designed for other purposes than what we're trying to do. I've run into the same problemo. Maybe when the world unthaws, I'll mess with it some more.
I believe the CEL is due to a ground backfeed caused by the switch. Something about a resistor will cure this. Look earlier in the thread for a possible fix. This should only happen on 96+ because they are OBDII. The OBDI systems could give to poos about it.
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig
My Photography
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02-18-2010, 09:33 PM
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#79
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Registered User
Join Date: Apr 2009
Location: Manitoba
Posts: 776
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wouldn't you want the fan always on except for water crossings?
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02-18-2010, 09:48 PM
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#80
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Registered User
Join Date: Jan 2008
Location: Winnipeg,Mb
Posts: 896
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scotch looks and maretts dont belong in a 12volt install 
__________________
HISWhite 99 XJ Sport
5" RC/ProComp lift, Serious long arms, 33" Cooper STTs, Soft 8s, 4.56s, Aussie locked D30, LSD 8.25, IRO adj track bar and HD Tie Rod, IRO HnT SYE, HDoffroad frame reinforcement and relocation boxes, JCR DIY rear bumper, RuffStuff diff covers, home made discos, recovery and sliders
HERSBlack 08 JK Unlimited X, Teraflex 1.5" leveling kit, 33's still to come
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02-18-2010, 09:57 PM
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#81
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Registered User
Join Date: Dec 2008
Location: Mormonville, UT
Posts: 3,321
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Quote:
Originally Posted by XJ Jay
scotch looks and maretts dont belong in a 12volt install |
English please.
__________________
Duff.
(broken)98 ZJ 5.9
UT Jeepcrew #13
NIGHTCREW
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02-21-2010, 08:06 PM
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#82
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Registered User
Join Date: Jul 2008
Location: Richmond, VA
Posts: 1
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Thank you SO much!! This is my first mod to my jeep, and is something that I have been wanting to do for quite a while.
I installed my switch to the panel that is left of the steering column (beside the rear-defroster switch). For the ground wire, I simple used the screw that was right below the panel =)
[pics come later]
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02-21-2010, 09:43 PM
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#83
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Registered User
Join Date: Jun 2007
Location: Sacramento , Cali
Posts: 725
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Thinking about doing this, this week.
Can you guys post up some pics of your switches ??
__________________
93 XJ white
Previous rigs : 96xj , 92 xj , 00 tj , 90 xj
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02-22-2010, 04:32 AM
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#84
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Registered User
Join Date: Aug 2009
Location: Goldsboro, NC
Posts: 30
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I have a 2001 and I have successfully wired the cooling fan to be controlled by an override switch or by the computer with temp and a/c and I also wired in a master kill switch to prevent it from coming on when in deeper water holes. No CEL either... It all works off the ground from the pcm to the relay. if you cut into that wire and take the pcm signal to another relay before the fan relay and have that new relay send the ground signal to the fan relay it will fool the pcm into thinking everything is normal (no CEL). The ground from the new relay will trigger the fan relay with temp and a/c. On that ground wire you can wire in a switch to send that wire ground to manually turn the fan on and also a master kill switch to prevent it from coming on in deeper water holes... sounds long winded but it took me a long time to think it up and it works perfectly.... basic idea is to put in another relay to trick the computer into thinking it's the fan relay but really it will just send a ground to the fan relay when it is triggered by the pcm... I will work on drawing up a diagram... No diodes... pcm is isolated with new relay...
someone on another forum took my idea and made a nice wiring diagram which he did on his Jeep too. This is his diagram of what I did for my fan...
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02-22-2010, 08:16 PM
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#85
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Registered User
Join Date: Jun 2005
Location: Sissonville, WV
Posts: 194
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Here's my first switch panel:
Here's my current switch panel:
The black switch on my current panel is a three position switch. In the up position the fan is always on and the left red LED is on. In the down position the fan is always off and the right LED blinks. In the center (off) position the fan is on "auto" and does whatever the factory computer tells it to do.
__________________
'00 TJ, 4.0/NV3550/NP231, 3.73s, D30(Aussie),D44(lsd),1.25"BL,1"MML,UCF TT
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02-22-2010, 10:29 PM
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#86
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Registered User
Join Date: Dec 2008
Location: Mormonville, UT
Posts: 3,321
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Ok I'll bite... how did you do that ^^??
__________________
Duff.
(broken)98 ZJ 5.9
UT Jeepcrew #13
NIGHTCREW
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02-23-2010, 03:40 AM
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#87
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Registered User
Join Date: Oct 2008
Location: Poland / Krakow
Posts: 149
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Quote:
Originally Posted by smccollamjr
The black switch on my current panel is a three position switch. In the up position the fan is always on and the left red LED is on. In the down position the fan is always off and the right LED blinks. In the center (off) position the fan is on "auto" and does whatever the factory computer tells it to do.
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Veeery clever solution with blinking diode on fan switched off  - reminds not to forget switching it back on 
__________________
4.0 / NP231 / TrueTrac rear / BRC liquid gas equipment / Lift 3" / SkyJacker Nitro 8000 / Maxxis Bighorn MT-762 31x10.5 R15 / 13000 lbs behind original bumper :)
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02-23-2010, 07:47 AM
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#88
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Registered User
Join Date: Jan 2009
Location: Boise, ID for now
Posts: 1,416
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Quote:
Originally Posted by smccollamjr
Here's my first switch panel:
Here's my current switch panel:
The black switch on my current panel is a three position switch. In the up position the fan is always on and the left red LED is on. In the down position the fan is always off and the right LED blinks. In the center (off) position the fan is on "auto" and does whatever the factory computer tells it to do. |
You've gotta explain this in detail so I can do this. 
__________________
_=====ooooo
//__l_l_,\____\,_____
l_/-\_l__l_/-\_|lllllll |
_\_/==== |; _\\ \\_|;
_(o)_)___(o)_)-- o-)_)
96 Jeep Cherokee 4" lift with 32" KM2's
94 Jeep Cherokee 3" lift with 29's!
JEEP Just Empty Every Pocket my life moto. :)
White Jeep Club Member #109
Jessie The Jeep (lots of pics)
Quote:
Originally Posted by aircruiser
But yeah my 4.0 has been hydrolocked twice, ran upside down for 7 seconds it still keeps coming back for more. its like that crazy ex-girlfriend that just wont quit..but unlike her, its a good thing haha
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03-04-2010, 03:46 PM
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#89
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Registered User
Join Date: Jul 2008
Location: Lexington, KY
Posts: 1,856
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So has anyone found a reversed switch yet? going to do this saturday, but my switches are the led ones, and have to match 
__________________
[CENTER]I take what i want from posts, and interpret them the way i see fit. If it's wrong, oh well[/CENTER]
[CENTER]You'll get over it[/CENTER]
[SIZE="1"]"To learn who rules over you, simply find out who you are not allowed to criticize.”
–Voltaire[/SIZE]
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03-04-2010, 05:28 PM
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#90
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Registered User
Join Date: Oct 2007
Location: Whitesburg, Tennessee
Posts: 4,445
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I bet I could buy some and rewire them then resell them......
__________________
95' XJ Country - Stock Skids - Limited Slip Rear Diff
Off Road Package - 4.0 HO - AX15 - NP231
Repeal Ohms Law!!!
Quote:
Originally Posted by Azzy
You can tell the character of a person in how they treat someone who can do nothing for them.
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>
Auxillary Fan Override Switch Write-up *pics*
