possible JDM Aux A/C Fan wiring solution?

[mot]

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

I "think" they only were found on gas/petrol vehicles with rear ac here, but don't quote me on that! ;p

 

[landcrusher80]

I "think" they only were found on gas/petrol vehicles with rear ac here, but don't quote me on that! ;p

JDM Diesel's have NO aux fan.

 

[Tapage]

I "think" they only were found on gas/petrol vehicles with rear ac here, but don't quote me on that! ;p

The part of rear AC make some sense .. " most " of the 80 series here come with dual AC so .. " most " come with aux fan ..

 

[Snailtrail]

NZ new 'GX' and 'VX' spec HDJ80's have dual A/C and are fitted with the condenser fan.

Having rear A/C seems to be the ticket...?

 

[SunTzuMD]

So does anyone that has one of these thing on it stock know if there is a sub-harness attached to it?

 

[Tapage]

aren't the US specs 80 common with dual AC . ?

 

[mot]

aren't the US specs 80 common with dual AC . ?

Oh Tapage...

 

[Tapage]

Oh Tapage...

looks like not uh ..

 

[96r50]

I finished this last night and I did a few things differently so I thought I'd share.

As mentioned, the 12 gauge wire that comes on the splices is difficult to work with in the tight confines of the relay box, as well as taking up a lot of space. To avoid this, I carefully undid some of the factory crimps on a couple of the connections. For the wire from the fuse to the relay I used the connector from the relay splice re-crimped on the end of the fuse splice, and on the opposite side of the relay (power out to the York) I attached my own 16 gauge wire to the relay end. I also managed to find some smaller gauge factory crimps in another Toyota wiring harness that I used for the coil side of the relay. One went directly to ground (on the fender below the charcoal canister) and the other runs to my pressure switch.

Thanks again to Tom for doing the legwork on this one!

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.

 

[S.CarolinaFZJ80]

For the auxilary A/C condenser fan re-tro stock set up, which ports on the EFI relay (Toyota P/N #90987-02004-83) go where? Sumotoy's wiring solution refers to the numbered ports on a generic relay, how do this solution work with the stock EFI relay?

 

[96r50]

The diagram is on the side of the Toyota relay. IIRC pins 1&3 are for the coil, 2&4 are the contacts for the load.

 

[S.CarolinaFZJ80]

How do these 1,2,3,4 numbers on the stock EFI relay correspond to aftermarket relays numbered 30, 85, 86, 87?

 

[S.CarolinaFZJ80]

Can anyone confirm the relay tabs as pictured here. I am looking for clarification as to which Toyota Relay pin number 1,2,3 & 4 corresponds to on an after market relay pin 30, 85, 86 & 87.
I know the middle one has 5 pins but I put it in the picture for the diagram alone.

Based on the picture, I can deduce that
1 = 85
2 = 87
3 = 86
4 = 30

Can anyone confirm this.

Thanks!

 

[96r50]

Yup, looks good to me.

 

[S.CarolinaFZJ80]

Is this how you wired up your OBA set up?

 

[96r50]

It is indeed: https://forum.ih8mud.com/80-series-tech/315929-york-oba-install.html

 

[S.CarolinaFZJ80]

So in Tricky T's post #10 he states... " 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)."

So can BOTH the Battery Feed, Pin 30 (Toyota Relay Pin 4) AND the 12+ Relay Trigger - Low Amp, Pin 85 (Toyota Relay Pin 1) get 12 volt power from this 10mm post?

The reason I am asking is, I am wiring up per the Sumotoy writeup but using the stock CDS fuse location with an in cab switch piggy backed to pin 86 (Toyota pin 3).

 

[S.CarolinaFZJ80]

Has anyone else done this?

 

[Aids10]

THX M8

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.

 

[9780MOP]

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.

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

I just picked up a JDM from a local part-out, but he didn't have any of the wiring, just the fan itself. Did SOR have the male plug and wiring? i'm trying to stay as OEM as possible and Sumo's write-ups are a little over my head.