OEM onboard air GX550 DIY

[caanuck]

Ok, More info on this search for 12v power in the back of the GX. I found the PN for the OEM tire inflator, properly called the "option connector (Tire Inflator)" the one on the vehicle is PN 90980-11288 and I am understanding from another forum entry that the male plug to fit this connector would be PN 90980-11287. Now I still cannot find this connector on my vehicle, and don't see any alternative wiring harnesses for the different trim levels, there is only one electrical wiring diagram for the 2024 GX550 but will keep looking based on tracing back to the junction boxes on the EWD and see where it takes me. BTW these male plugs are found on my local Toyota dealer parts webpage for 25$ CDN.(Shell only, pins and other pieces come separately of course)

 

[WTITW]

Anyone pushed these to thermal cut off yet? For $1200 and the same performance as a $130 amazon special, I hope it has a 100% duty cycle. What's the manual say about duty cycle?

Quick Comparison this to a commodity version: I wheeled with my brother yesterday. He's on 35’s, down to 25 for the ride. Me 32’s went to 20 psi. Aired them both back to 40 psi in under 10 min with a $200ironman 4x4 pump.

Anyone tried re-routing piping to exterior?Having to leave the vehicle open to use it, move cargo out of the way, have all that noise in there with the family (not to mention heat / cold) seems like a real disadvantage to having it built in.

I wonder if you can fit an arb double in that same spot.

 

[turbo8]

I haven't reached a thermal cut off yet. I really like the set and forget feature.

 

[WTITW]

Yeah, that is really nice. And I think ARB’s version of that would be similar price all in with a double.

 

[Rednexus]

The Chinese compressors (Ironman, Smittybilt, Maxi-Trac, Maddox, ect) are pretty sketchy on the inside. I had a Smittybilt single-piston in my rig for a couple years. When it worked, it was great for the price. But, I ended up literally pitching it and getting a ARB twin to replace it. The 10 ga wires inside the Smittybilt were connected with household-style wire nuts. Mine finally totally died when the un-sheathed wire running running into the motor rubbed though it's insulation and shorted it out. And, when it was working, it would only make 7 tires before hitting the thermal shutoff. The compressor body would also get super hot and burned me a couple of times. The ARB, on the other hand, has been flawless and is faster, and the 100% duty cycle is legit.

IMO the best options for airing up would be an ARB or a Milwaukee M18 (which is about half as fast as a ARB twin, but still more than usable). I'm presuming the Lexus OEM compressor is fine being that it's Toyota-engineered.

 

[WTITW]

Yeah. My smitty went to crap after 3 years and now I just use it for blowing out water lines on the trailer : )

Ironman seems great though. Have not disassembled. Have heard of arbs melting relays so they’re not bullet proof, but at least they are completely repairable for the investment.

 

[Rednexus]

Yeah. My smitty went to crap after 3 years and now I just use it for blowing out water lines on the trailer : )

Ironman seems great though. Have not disassembled. Have heard of arbs melting relays so they’re not bullet proof, but at least they are completely repairable for the investment.

Might have been installation-related as the ARB draws a ton of current. I have mine on 6 ga wire running off the battery (with a 60 amp circuit breaker). The 6-ga gets warm but not hot - I'd have used 4-ga in hindsight. Something like 8 or 10 ga feeding an ARB twin might get very, very warm.

 

[Oakleyguy]

Might have been installation-related as the ARB draws a ton of current. I have mine on 6 ga wire running off the battery (with a 60 amp circuit breaker). The 6-ga gets warm but not hot - I'd have used 4-ga in hindsight. Something like 8 or 10 ga feeding an ARB twin might get very, very warm.

^Very likely this; OR they were running the compressor with the truck turned off. As voltage drops amperage increases.

My ARB single and twins have been flawless for going on 10 years.