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Unread 08-05-2010, 01:15 PM   #16
TeeJay00
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Originally Posted by Joeggernaut View Post
keyword^^^^. it rhymes with stealership as in steal your money.

and getting oem might not be your best bet considering oem is the main issue. but there really isnt any aftermarket fan, switch, or resistor so we are all stuck unless you put relays.
I am interested in this relay setup ... I might aswell do that if I managed to get a cheap replacement blower!!! The cheapest I found here was $180

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Unread 08-05-2010, 02:06 PM   #17
Border Dave
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Originally Posted by lostone73 View Post
Is your relay installed in the "high" circuit only? I have a FSM and ive just about figured out how to build a relay bank of 4 to carry the load for all 4 speeds.
Fried blower switch fix - JeepsUnlimited.com Forums
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Unread 08-05-2010, 02:12 PM   #18
Ross
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Originally Posted by Joeggernaut View Post
For 100-125 bucks you can get a new blower motor, a switch, a resistor, and 4 relays with plugs. Take those 4 relays and splice them in between the switch and resistor as relays handle current and heat much better than a small under size wire that chrysler put in. Or let your jeep burn up and file a class action lawsuit against them and make them issue a recall to help the rest of us.
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.
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Unread 08-05-2010, 04:26 PM   #19
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Originally Posted by Ross View Post
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.
Look at the wiring going to the fan switch. You should find a light blue wire, 3rd speed and a brown wire, 4th speed. These are the 2 wires I spliced into to add the relays. Remember 1 relay for each speed you want to do. Once you fix this design flaw the issues with the mode switch will go away.
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Unread 08-05-2010, 10:19 PM   #20
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Originally Posted by JBTJ View Post
Look at the wiring going to the fan switch. You should find a light blue wire, 3rd speed and a brown wire, 4th speed. These are the 2 wires I spliced into to add the relays. Remember 1 relay for each speed you want to do. Once you fix this design flaw the issues with the mode switch will go away.
Don't those relays only protect the blower motor switch? Isn't the mode selector switch completely separate?
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Unread 08-06-2010, 06:45 AM   #21
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Originally Posted by Ross View Post
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.
the blower motor is the big draw (and the speed resistors) so it happened you were on a/c at the time . but really what did it was the motor/resistor . you isolate this like an ignition circuit with a relay . four to be exact . one for each speed . there are probably selector modules of some sort too but relays are all i currently know about . i know a guy that could likely do this with two relays with multiple contacts but he aint me . guys a genius .the only way i've come up with for two relays still involves power thru the resistor and switch gear and isolating the motor . i dont think that's good enough . so for me it's four relays .
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Unread 08-06-2010, 05:23 PM   #22
Ross
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Originally Posted by herbiehind View Post
the blower motor is the big draw (and the speed resistors) so it happened you were on a/c at the time . but really what did it was the motor/resistor . you isolate this like an ignition circuit with a relay . four to be exact . one for each speed . there are probably selector modules of some sort too but relays are all i currently know about . i know a guy that could likely do this with two relays with multiple contacts but he aint me . guys a genius .the only way i've come up with for two relays still involves power thru the resistor and switch gear and isolating the motor . i dont think that's good enough . so for me it's four relays .
This will fix the issue with the AC/max AC switch, the one that is on the same control as the vaccum lines?

I was thinking about cutting a hole in the bottom below the switches and another where the ash tray sits and putting in a fan, do you think that would keep things cool enough not to melt?
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Unread 08-06-2010, 05:32 PM   #23
JBTJ
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Originally Posted by Border Dave View Post
Don't those relays only protect the blower motor switch? Isn't the mode selector switch completely separate?
They are involved through related circuits but I can't say for sure. But after adding the relays replacing the fan switch and the melting mode switch I no longer have had any issues what so ever. Even have done this on several other JEEPS with the same melting issues and none of them have had any problems.
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Unread 08-06-2010, 06:12 PM   #24
Cuder
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zachjf posted the best diagram of the relay mod I have seen, look at post #33.
http://www.jeepforum.com/forum/f9/fr...w-pics-579700/
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