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Unread 02-13-2011, 12:03 AM   #31
robert1973
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Quote:
Originally Posted by rdsk8ter View Post
there are 3 relays you use 2 for the basic functions and the t-stat grounds the relay making contact then the em1 relay will kick high speed if I forget to flip the switch back on that kit might work if you dont know how to read the diagram above I would probaby shy away from doing that myself if I were you. Im by no means trying to put you down but If you but that kit it will have a wiring diagram that you have to follow just the same
Didn't think you were putting me down so no worry, appreciate the honesty actually, took it as you were looking out for me My plans are to find a kit that would work for me and i have a friend who can help me/is teaching me to do these things,. Which is awesome and am grateful for it. I did come across this kit at jegs, which i have two stores within 15 minutes of me, it is made for dual fans. http://www.jegs.com/i/JEGS-Performan...rentProductId= Another reason for trying to find a kit is to make it as easy on my buddy to help me do it. He's done a ton for me and i try not to complicate things any more than need be.

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Unread 02-15-2011, 10:48 PM   #32
nedmoore
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Got your package Randy, thanks. My mechanic is doing some other work for the next couple of weeks, what are you guys thoughts of throwing on a mechanical fan temporarily? My biggest concern is that I do not have a shroud.......
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Unread 02-16-2011, 12:02 AM   #33
rdsk8ter
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Quote:
Originally Posted by nedmoore View Post
Got your package Randy, thanks. My mechanic is doing some other work for the next couple of weeks, what are you guys thoughts of throwing on a mechanical fan temporarily? My biggest concern is that I do not have a shroud.......
sounds bad but before I had a 12" flexalite fan with no shroud and I never overheated but I have a 4 core radiator so that probably helped


now as far as buying a kit honestly have your friends look at that diagram I posted if they get itrun with it. Its super easy and MUCH cheaper then the jegs one ohh yeah more functions too just my .02.
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Unread 03-05-2011, 04:55 PM   #34
bigredisb
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I have a coule of questions on the swap. I purchased a 98 contour fan assembly out of a ZTEC engine and I have the same looking fan assembly but I only have 2 pin terminals on the blower motors. One is a ground and one is power. I have a resistor as well but wasnt planning on using it (what was it for to begin with??) I believe what I have is a single speed fan, which when hot wired on the floor provides 10x the amount of airflow as my current electric fan.

How many terminals do you have on your fans? looking at the great schematic that was posted it showed 3 wires per motor, low, high, and ground.

Just curious how you hooked it up.
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Unread 03-05-2011, 06:34 PM   #35
Cutlass327
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Rdsk8ter - Why would you wire the EM relay in there? Looks like it would have been the same deal if you would have just left the manual off switch to run just the low fan. With that EM relay, you are bypassing the manual switch, yes, BUT it will still come on under the same conditions as the normal operation of the Hi fan. This kind of negates the whole idea of the switch on the normal Hi fan operation.

It would be interesting to find a couple temp switches, one to turn on the low fan maybe 175*, then the Hi would come on at 195* or something. This way the fan would be off until needed, like modern vehicles are set up.
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Unread 03-05-2011, 07:52 PM   #36
rdsk8ter
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Quote:
Originally Posted by Cutlass327 View Post
Rdsk8ter - Why would you wire the EM relay in there? Looks like it would have been the same deal if you would have just left the manual off switch to run just the low fan. With that EM relay, you are bypassing the manual switch, yes, BUT it will still come on under the same conditions as the normal operation of the Hi fan. This kind of negates the whole idea of the switch on the normal Hi fan operation.

It would be interesting to find a couple temp switches, one to turn on the low fan maybe 175*, then the Hi would come on at 195* or something. This way the fan would be off until needed, like modern vehicles are set up.
the other relay is actually switched lol I figured that out and ran a switch into the cab for manual high speed on
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Unread 03-05-2011, 10:16 PM   #37
Coiz
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Quote:
Originally Posted by bigredisb View Post
I have a coule of questions on the swap. I purchased a 98 contour fan assembly out of a ZTEC engine and I have the same looking fan assembly but I only have 2 pin terminals on the blower motors. One is a ground and one is power. I have a resistor as well but wasnt planning on using it (what was it for to begin with??) I believe what I have is a single speed fan, which when hot wired on the floor provides 10x the amount of airflow as my current electric fan.

How many terminals do you have on your fans? looking at the great schematic that was posted it showed 3 wires per motor, low, high, and ground.

Just curious how you hooked it up.
If you have all the wiring going to the resistor and the fans, then you should have two main wires. A green with white and green with blue. If you give power to the green with white you will get dual low speed fans. If you supply power to the green with blue, you get dual high speed fans. Notice they are protected by a 60A fuse and need a minimum of 10 gauge wire.



If you are missing the wiring to the resistor then you likely have a green with yellow and a green with orange at the fans. Treat them as simple motors at that point, power and grounds, use relays. This is a good way to do it with the popular flex-a-lite controller. This would be for dual high speed fans.


And if you would like to have it wired with a three way switch for the option of on/off/auto, you would wire it like this.
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Unread 03-06-2011, 07:29 AM   #38
bigredisb
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Thanks for posting the great info on the system. So the resister is creating a voltage drop to run low speed and bypassing the resistor for full voltage and high speed.
Makes sense.
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Unread 03-07-2011, 08:34 AM   #39
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One more question from the swaps you have done. What thermostat are you running? I am running a 195 and was going to use a 200 switch.
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Unread 03-07-2011, 11:33 AM   #40
Coiz
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I run a 195 thermostat. The fan comes on around 210 and shuts back off around 200.
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Unread 03-09-2011, 08:38 PM   #41
Rojo78CJ7
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This is an awesome thread. SUBSCIBED!!!!!!!!!!!
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Unread 03-10-2011, 01:35 AM   #42
Cutlass327
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Ned, my CJ doesn't have any shroud, only the 4 blade solid hub fan on my 258. It hasn't overheated at all, and I drove it in a couple 90* days we had up here last Summer.. I think it is still the original radiator, too. I looked in the bottom hose fitting when I had to resolder it (leaked) and the bottom of all of the tubes were really crusty and partially blocked... A new stock replacement is in the list of things for this summer...
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Unread 03-10-2011, 05:38 PM   #43
nedmoore
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Thanks Cutlass, I am up and running with the dual contours... I feel bad for not updating this thread. I got the harness from rdsk8ter plugged it into the fans and resistor, one to power, and one to the thermostat and grounded it.

Works great, both of the fans kick on around 190 and cools it right down. I can actually feel the warm air on my legs when the fans come on. I must have a hole in the firewall that I forget to cover up with my "peel and seal" (cheap dynomat)

I need to change the wiring a little, the hot wire is not connected to a hot on the ignition, so the fans cycle on and a couple of times after the motor is shut off. I also do not like starting it with the motor hot, sometimes the fans are on while starting.

I will post some pics tomorrow.
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Unread 03-10-2011, 07:03 PM   #44
rdsk8ter
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yea having them on when starting and the engine off is a bad thing lol
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Unread 03-16-2011, 06:26 PM   #45
nedmoore
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Here it is, installed and functioning. Thanks for everybody's help.
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