possible JDM Aux A/C Fan wiring solution?

[NeverFinis]

Beating a dead horse but is it really dead?

I noticed that Autozone sells a "Gp-Sorensen / Relay - Radiator Cooling Fan Motor for the land cruiser.

So, I checked my fuse block under the hood and there is an empty "CDS Fan" relay location and a 20amp fuse location. I checked my wiring book but there was nothing on the fan wiring since it is a US version of the book.

I am wondering if we could get the pigtail from that relay/fuse location that goes directly to the fan. Someone out of the US would have to check for that part number if it exists.

Link to Autozone relay fuse: http://www.autozone.com/R,APP125937...partType,01337/shopping/partProductDetail.htm

 

[Hants]

Possible, but not easy. After talking with CDan and finding out that there is no off-the-shelf wiring, I ordered a copy of the wire harness repair manual from Mr. T. Per CDan, I'll need to identify the specific plugs by connector type & size, and wire size, then basically build-my-own.

The CDS Relay location looks to take an EFI relay once you get the wiring installed. This would also make a good backup EFI relay source.

 

[AfricanToy]

I am interested in this mod...not sure which wiring harness I should be looking for??? I want to hook it up so i can control when I want it on and when I wan it off....by the way I have located a 92 4runner condenser fan $45 and a 92 celica air con fan...$35

So which one should I use?

any help would be appreciated

 

[NLXTACY]

Well I bought the JDM fan from SOR and just added a relay, got power from my aux. fuse panel and added a Toyota switch to my dash. I decided I wanted the fan to go on when I wanted it to go on. Works perfect after a 3000ish mile drive to Yellowstone from LA at the end of August. Nary an issue.

 

[AfricanToy]

what is the diameter of the JDM fan? 12in? or 14 in?

 

[NLXTACY]

what is the diameter of the JDM fan? 12in? or 14 in?

If I had to guess I would say 12" but I'm not sure and the truck isnt here to check it.

 

[Tapage]

I can take a measure and post late ..

 

[AfricanToy]

I found a Infinty fan 13.2 inches and very nice...pick and pull $15

I am pulling the front grill tonight. Also found a generic lighting harness with 40 amp relay which I am going to contect to the battery or key activated power source.

I will have a toggle switch inside the cabin to manually control the fan..

After thought: I found smaller 8 inch fans wondered if it couldn't be put in front of the transmission cooling radiator? any done this ?

 

[alia176]

Sumotoy posted a nice writeup on how to wire up an aux fan so that it starts up automatically based on A/C line pressure or turning it on manually. This is a slick setup so that in the summer time, the fan will come on as needed but if you want to leave it on for slow crawling, you can do so as well.

FWIW, I used a 4Runner fan for my aux fan.

 

[TrickyT]

Possible, but not easy. After talking with CDan and finding out that there is no off-the-shelf wiring, I ordered a copy of the wire harness repair manual from Mr. T. Per CDan, I'll need to identify the specific plugs by connector type & size, and wire size, then basically build-my-own.

The CDS Relay location looks to take an EFI relay once you get the wiring installed. This would also make a good backup EFI relay source.

I'm in the middle of a similar electrical project myself, and plan to use the CDS fuse socket and CDS relay socket for an auxiliary power circuit for controlling my on-board air compressor. There are actually four empty fuse sockets in the engine compartment fuse block (labled Relay Block No. 2 in the EWD manual) that could be utilized for additional power circuits, plus there's easy access to +12v battery power right there too. (There's a 10mm bolt in the relay block with a terminal lug that connects directly to fusible link AM1 coming off the batery).

I've inspected the connectors in RB#2 and I think this is the Toyota part number needed to utilize the unused fuse positions: 82998-12140 - factory terminated repair connector with 6" wire (two needed per fuse).

The unused CDS relay socket indeed uses the same relay as both the EFI relay and the circuit opening relay (p/n 90987-02004-83), so adding a relay to this socket for controlling an auxillary device also serves as a convenient spare for use in an emergency. I believe the part number for the terminals used for the relay is 82998-12060 (four needed). These terminal are locked into the socket with a white plastic retainer. You've got to remove this retainer before you can release or insert the individual terminals.

I've ordered a few of both of these types of terminals, but it will be at least a couple of weeks before I get back to this project and confirm that these are really the correct parts.

 

[Hants]

Cool. This project got tabled for a while, but I'm ready to fire it up again. Please confirm the part numbers once you get it going. I'd love to use Mr. T parts as much as possible.

 

[TrickyT]

...I've inspected the connectors in RB#2 and I think this is the Toyota part number needed to utilize the unused fuse positions: 82998-12140 - factory terminated repair connector with 6" wire (two needed per fuse).

The unused CDS relay socket indeed uses the same relay as both the EFI relay and the circuit opening relay (p/n 90987-02004-83), so adding a relay to this socket for controlling an auxillary device also serves as a convenient spare for use in an emergency. I believe the part number for the terminals used for the relay is 82998-12060 (four needed)...

I've confirmed that these are indeed the correct Toyota connector numbers for use in Relay Block #2 (under hood). Both come with 6" length of ~12 AWG wire attached.

 

[jvazquez53]

I have one of those in one of my trucks, is a generic one and is hard wired. The truck starts, the fan goes on. First I didn't like it, but I got used to it.

 

[Pskhaat]

Does the RB#2 take the EFI-style relay? You just ordered 82998-12140 x2?

 

[96r50]

I've confirmed that these are indeed the correct Toyota connector numbers for use in Relay Block #2 (under hood). Both come with 6" length of ~12 AWG wire attached.

Hey Tom, any updates on this? I am looking at using these fuse and relay locations to power my York (I assume that is what you used it for too). If you get a chance, could you share some details on how you wired this up using the factory locations and connectors? I'd appreciate it!

 

[SunTzuMD]

Maybe some of the 80 owners in Japan can tell us if there is a sub harness on their trucks for the fan?

 

[landcrusher80]

Maybe some of the 80 owners in Japan can tell us if there is a sub harness on their trucks for the fan?

Most of us have Diesels. The aux fan is only found on gasser's.
I have a buddy that has gassers that is used for parts.
I shall take a look at it one day.

BTW SunTzuMD I have your sun visors and overhead console waiting for you. Check your PM.

LandCrusher80

 

[TrickyT]

Hey Tom, any updates on this? I am looking at using these fuse and relay locations to power my York (I assume that is what you used it for too). If you get a chance, could you share some details on how you wired this up using the factory locations and connectors? I'd appreciate it!

I didn't take any photos when I did this project, sorry. But basically you unmount RB#2 from the fender, pull the bottom cover off, and use the factory replacement connectors whose part numbers I posted above to populate the CDS fan relay socket (yes, it's the same relay p/n as the main EFI relay) and one of the spare fuse locations. I ran one side of the fuse to the 10mm hex bolt in the relay block (+12v supply) and the other side of the fuse to one of the relay contacts. The other relay contact goes to the York compressor. One side of the relay coil is connected to ground and the other coil connection is in series with the pressure switch and an on/off dash switch (labeled "OBA"), which then connects to one of the ignition switch circuits that is live whenever the ignition switch is in the "on" position. All pretty straight forward really. The only tricky part, if you are not familiar with Toyota electrical connectors, is that you've got to pop off the white plastic retainer from the relay socket before you insert the terminal contacts. A dental pick works well for this, but still requires a gentle hand so as not to break anything. Details on how to do this are somewhere in the FSM or EWD. Also, the factory replacement connectors come with 12AWG wires attached - large and stiff and kinda hard to work with in the tight confines of the relay block. I used 18AWG for all my wiring.

Hope this helps.

 

[96r50]

That's great! It's more or less what I was planning to do but it's nice to know I'm not re-inventing the wheel.

 

[Tapage]

Most of us have Diesels. The aux fan is only found on gasser's.
I

curious .. here they come in Diesel and not in gassers ..