OEM onboard air GX550 DIY

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Are they a fabric/trunk material type finish, or are they hard plastic?
They are like all weather rubber mats.

I am still waiting for these from Lexus to be made available too.
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thank you yet again @turbo8. got my ham radio mounted in there today - oddly enough my large wires are hot all the time, even with ignition off. i am wondering if the harness somehow has a defeat relay that connects with the two smaller wires and the compressor unit. regardless, i sincerely appreciate all the help!
@wannaBEE Can you share how you tapped into those wires for your radio. Unable to find the previous post by oakleyguy and I would love to know if they are a couple of spade connectors or I will need to cut and splice. Anyone know if there is a connector to get from toyota/Lexus to make my fridge/radio/compressor power connection a super clean install?
 
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@wannaBEE Can you share how you tapped into those wires for your radio. Unable to find the previous post by oakleyguy and I would love to know if they are a couple of spade connectors or I will need to cut and splice. Anyone know if there is a connector to get from toyota/Lexus to make my fridge/radio/compressor power connection a super clean install?
Here you go:

 
Here you go:

Thanks @Oakleyguy that straight on shot of the connector shows what I need to get this done. I am making a pigtail about 4’ long that will connect to that plug and end in an anderson plug (my preferred common connector). It will sit coiled in the compartment with the jack so I can access it occasionally for the fridge, compressor, charging portable power pack, battery, etc.

Anyone able to make these pigtails using the proper toyota/Lexus plug? Seems like a great option for those of us that need access to a high amp power outlet in the rear of the GX550.
 
Thanks @Oakleyguy that straight on shot of the connector shows what I need to get this done. I am making a pigtail about 4’ long that will connect to that plug and end in an anderson plug (my preferred common connector). It will sit coiled in the compartment with the jack so I can access it occasionally for the fridge, compressor, charging portable power pack, battery, etc.

Anyone able to make these pigtails using the proper toyota/Lexus plug? Seems like a great option for those of us that need access to a high amp power outlet in the rear of the GX550.
I left a request on the website for this business https://findpigtails.com/ just to see if they can find it. We really just need the plug with a bit of wire to solder to, I will report back once I get any info.
 
I left a request on the website for this business https://findpigtails.com/ just to see if they can find it. We really just need the plug with a bit of wire to solder to, I will report back once I get any info.
I ended up making a Frankenstein-ish harness using male spades and 3M electrical tape for isolation.
 
I ended up making a Frankenstein-ish harness using male spades and 3M electrical tape for isolation.
I will end up doing the same no doubt, minus the 3m branded tape, don’t think I have any of that. I wanted to give the vast collective knowledge of the internet a chance to assist in doing this “the best way” before I proceed.

Was thinking I might mask it off and use hot glue to create a sort of plug around the spade connectors so it can be connected/disconnected more than once.

So you didn’t use the smaller wires, just the two main larger size with spades. Any idea what those smaller wires are for? Does the OEM compressor use them? Would it be can-bus communications or a relay? Someone must have the wiring diagram.
 
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I will end up doing the same no doubt, minus the 3m branded tape, don’t think I have any of that. I wanted to give the vast collective knowledge of the internet a chance to assist in doing this “the best way” before I proceed.

Was thinking I might mask it off and use hot glue to create a sort of plug around the spade connectors so it can be connected/disconnected more than once.

So you didn’t use the smaller wires, just the two main larger size with spades. Any idea what those smaller wires are for? Does the OEM compressor use them? Would it be can-bus communications or a relay? Someone must have the wiring diagram.
The smaller wires if I recall are for ignition signal and illumination. The heavy gauge wiring is constant 12V.
 
The smaller wires if I recall are for ignition signal and illumination. The heavy gauge wiring is constant 12V.
So if you don’t need to do anything with the ignition wire to get your power then it must control a relay in the compressor itself while the two larger cables are live all the time?

If they are live even when the ignition is off I wonder if there are any cutoffs or controls to prevent me from running the start battery down and potentially leave me stranded. Need that wire diagram and some sort of knowledgeable Lexus technician to tell us I suppose.

I did get a response from the pigtail finders and I have asked him to proceed with the search to see if he can find it. Might cost a bit but maybe with more sales volume it comes down. See screen shot of the message from David Shireman, their email is support@findpigtails.com. I’ll see what he comes up with.

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So if you don’t need to do anything with the ignition wire to get your power then it must control a relay in the compressor itself while the two larger cables are live all the time?

If they are live even when the ignition is off I wonder if there are any cutoffs or controls to prevent me from running the start battery down and potentially leave me stranded. Need that wire diagram and some sort of knowledgeable Lexus technician to tell us I suppose.

I did get a response from the pigtail finders and I have asked him to proceed with the search to see if he can find it. Might cost a bit but maybe with more sales volume it comes down. See screen shot of the message from David Shireman, their email is support@findpigtails.com. I’ll see what he comes up with.

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Yes you should wire in a control relay and switch for your air compressor; ARB's default kits include this. There are no low voltage protections on the constant 12V, only the 50A fuse; I've confirmed this via the wiring diagram (my TIS has expired since).

That said, you should not run an air compressor with the truck turned off.
 
Yes you should wire in a control relay and switch for your air compressor; ARB's default kits include this. There are no low voltage protections on the constant 12V, only the 50A fuse; I've confirmed this via the wiring diagram (my TIS has expired since).

That said, you should not run an air compressor with the truck turned off.
That is a good point about the relay and I remember that about the ARB compressor I had previously. I will be mostly be using a fridge which is more continuous than a compressor and I am planning to use this power to charge a battery that runs the fridge. So switching on/off with ignition will work best for me. The fridge draws max 3.5 amps and cycles on and off as needed and it is something I leave running while away from the vehicle, I will figure out a relay. This will be a lot like a regular dual battery setup.

Need to think more on the best way to set this up for my other accessories that will use it.
 
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That is a good point about the relay and I remember that about the ARB I had previously. I will be mostly be using a fridge which is more continuous than a compressor and I am planning to use this power to charge a battery that runs the fridge. So switching on/off with ignition will work best for me. The fridge draws max 3.5 amps and cycles on and off as needed and it is something I leave running while away from the vehicle, I will figure out a relay. This will be a lot like a regular dual battery setup.

Need to think more on the best way to set this up for my other accessories that will use it.
Now adding more context. For my fridge I just ran it off the constant 12v with no switching as my old arb has low voltage protection built in.
 
I think I will create a pigtail to connect to the factory harness where the tire inflator compressor would go and create two anderson plugs, one switched with the ignition using a relay and one direct from the start battery. I also have a fridge (Waeco cf35) with the low voltage cutoff that prevents over drawing from the starting battery, however using the Li-Ion battery between the fridge and the start battery prevents this from doing its job. My setup is meant to keep the fridge cold without using the start battery even while the car is off.

So the plan will be to charge the Li-Ion battery off of the switched power and then run the fridge from the Li-Ion battery. I will use the the second “direct “ Anderson’s plug for any future needs.

Now to get the parts and build this pigtail.
 
…only the 50A fuse;…

I see the 50 amp entry in the fuse box legend under the lid but I don’t recognize the type of fuse used here. If I do blow this fuse is this blue box (see the 50-30-40 on the cover in the photo attached) replaced as a unit or is this a breaker that resets or something else? I am trying to cover all the angles here before I make this pigtail and I can include a fuse inline if required. I also want to have a spare on hand if the 50 amp in the fuse panel is a specialized piece. Let me know what info you have on this thanks

Answer my own question this is a replaceable item see example here on amazon

New Fusible Link Fuse - Compatible Replacement Nissan Toyota Infiniti Lexus 50/30/40 Amp for Altima Maxima Rogue Pathfinder Sienna etc New 927-8301 9278301 Fusible Link Fuse - 24370-C992B 24370C992B 90982-08301 9098208301 Compatible Replacement Nissan Toyota Infiniti Lexus 50/30/40 Amp for Altima Maxima Rogue Pathfinder Sienna etc : Amazon.ca: Automotive - https://www.amazon.ca/dp/B08WKQNH34?ref=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&ref_=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&social_share=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&language=en-CA

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I see the 50 amp entry in the fuse box legend under the lid but I don’t recognize the type of fuse used here. If I do blow this fuse is this blue box (see the 50-30-40 on the cover in the photo attached) replaced as a unit or is this a breaker that resets or something else? I am trying to cover all the angles here before I make this pigtail and I can include a fuse inline if required. I also want to have a spare on hand if the 50 amp in the fuse panel is a specialized piece. Let me know what info you have on this thanks

Answer my own question this is a replaceable item see example here on amazon

New Fusible Link Fuse - Compatible Replacement Nissan Toyota Infiniti Lexus 50/30/40 Amp for Altima Maxima Rogue Pathfinder Sienna etc New 927-8301 9278301 Fusible Link Fuse - 24370-C992B 24370C992B 90982-08301 9098208301 Compatible Replacement Nissan Toyota Infiniti Lexus 50/30/40 Amp for Altima Maxima Rogue Pathfinder Sienna etc : Amazon.ca: Automotive - https://www.amazon.ca/dp/B08WKQNH34?ref=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&ref_=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&social_share=cm_sw_r_ud_dp_ZPRYZRH4REPQPAHVM1DW&language=en-CA

View attachment 4027223[/URL]

Thanks @Oakleyguy that straight on shot of the connector shows what I need to get this done. I am making a pigtail about 4’ long that will connect to that plug and end in an anderson plug (my preferred common connector). It will sit coiled in the compartment with the jack so I can access it occasionally for the fridge, compressor, charging portable power pack, battery, etc.

Anyone able to make these pigtails using the proper toyota/Lexus plug? Seems like a great option for those of us that need access to a high amp power outlet in the rear of the GX550.
Ok, an update. I got the parts and tore into the back of the GX ready to install this afternoon and guess what- no plug to be found. I double checked the fuse box and there is a metal connector behind the 50 amp fuse which means it goes somewhere!

But once I had the interior side panel off there is no spare plug. And searched around behind the top panel directly behind the back side window and nothing. Photos attached.

for those of you that have done this before any advice? @Oakleyguy ?

This is a luxury plus so the electric third row seats are in the way if it is located in the floor somewhere

I won’t leave it apart for long so help is appreciated.

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This may be a model variation since it looks like yours is the Luxury model? It should be in that same harness that your third row seat is powered by. I doubt it, but maybe the circuit was repurposed for the thirdrow?
 
This may be a model variation since it looks like yours is the Luxury model? It should be in that same harness that your third row seat is powered by. I doubt it, but maybe the circuit was repurposed for the thirdrow?

Likely is a model variation. The harness and plug for the OEM compressor / Tire inflator should be right here where I marked it in blue. Does anyone have a TIS subscription to have a look at the wiring harness. This is a Canadian 2024 GX550 luxury+ model and I can’t find anything online.

The fuse box has a spade into the back of that fuse labelled Tire Inf so where does it go? Another funny thing is that the fusible link installed is for three positions in the fuse box 50/30/40 but only the 50 has a label and has two spades behind it, the other two are not used. This would seem like the only thing that requires that fusible link to be there is the compressor / tire Inflator which is not installed from the factory so why is the fusible link installed at all, seems like $ that Lexus didn’t need to spend unless something else is on that circuit?

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Pull that fuse and see if your third row works.
 
Pull that fuse and see if your third row works.
Pulled the 50/30/40 fuse labelled for the Tire Inf and the 3rd row seats power raise/lower still works.
More ideas of where this OEM compressor plug might be located in the 2024 luxury+ ?
 
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