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Air compressor install

1,200 Views | 12 Replies | Last: 4 mo ago by normaleagle05
normaleagle05
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AG
I think we've discussed portable and vehicle mounted air compressors a couple of times here lately. So here is a brief write up on an install I did this weekend.

Wife and I both have a Jeep JL with an onboard ARB single high output 12v compressor. My primary wheeling buddy passed away in May '24. He had a diesel Rubicon and we always just aired up all eight 35s with my compressor. It never hit it's duty cycle doing that, but more air is better. We're finally getting back on the trail with his wife, daughter, and a friend of theirs in several Jeeps this coming weekend at Crossbar Ranch in Davis, OK.

Been talking about doing a lower cost install in (now) her Jeep. So I ordered a Vevor off Amazon for ~$112 and some other parts.

The Vevor is nearly identical to the ARB and ~1/3 the price. Both will install inside the Jeep body behind the driver tail light.


The Jeep has factory Aux switches with leads under the passenger dash and under the hood next to the battery. I ran a heavy primary lead from the battery to a mega fuse block and a light gauge switch wire off on of the 15 amp aux leads next to the battery. They come together into a woven wire loom, across the front of the Jeep, through the firewall, and along/behind the driver side floor panels, until they're at the back corner. A 1/4-inch plastic air line/push to connect setup follows the same route.

Behind the tail light there is a pinch seam on the body that the mounting bracket/mount plate are sized perfectly to grab a hold of.

And the the compressor.....

Goes in it....

From there it's pretty straightforward process of connecting the primary to the supplied relay, the relay and compressor grounds to a nearby body grounding stud, the aux switch lead to the compressor's pressure switch, the pressure switch to the relay, and the compressor hot to the relay.

Don't have extra pics, but I run the 1/4-inch line to both front corners and a wye at the rear using push to connect fittings. Then make 3 short and 1 long quick connect leads with clamp on air chucks. This lets you air all 4 tires up/down together at the same time/to the same pressure. There's a line run to the driver seat to connect a pressure gauge to monitor the tire pressure while in use.
ShouldastayedataTm
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Nicely done. Always good to have air handy.
docb
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AG
Why not just buy one of the small portable Viair compressors that fit in a small bag? They work great and seems like a lot less hassle than mounting something.
redaszag99
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Because jeep Brah
normaleagle05
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AG
A number of reasons. Limited storage space in the Jeep makes it nice to have the compressor stored elsewhere. It's also much more secure being out of sight and bolted down. Similar to carry gun recommendations, get the one you'll always carry and don't leave it unsecured in your vehicle for a thief.

Performance is also a big one. The portable Viairs specifically are decent compressors but have a shorter duty cycle before over heating and put out 2/3 the air of the ARB/Vevor. Not a big deal if you're topping up one tire a few pounds but it's a bigger deal if you're air 4 or 8 35-inch tires up from 15psi or less to highway pressures.

It's not for everyone, but does have some advantages. Also, because Jeep brah?
Deerdude
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I have OBA in my F250 both for tires or impact but also airbags. My first pump lasted about a year and died. Second time around I ran the intake up under rear seat for drier air and pump has outlasted first one so far
Furlock Bones
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docb said:

Why not just buy one of the small portable Viair compressors that fit in a small bag? They work great and seems like a lot less hassle than mounting something.



Most of the portable ones don't push nearly enough air.
docb
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AG
Furlock Bones said:

docb said:

Why not just buy one of the small portable Viair compressors that fit in a small bag? They work great and seems like a lot less hassle than mounting something.



Most of the portable ones don't push nearly enough air.

I guess it's just a different application it's being used for. I have a Viair compressor I keep in the toolbox of my 3/4 ton truck along with a plug kit that has served me just fine. It inflates those tires to 65-70 psi but it's just used for emergencies. I have way bigger air compressors at my house and ranch that are way faster.
Furlock Bones
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AG
docb said:

Furlock Bones said:

docb said:

Why not just buy one of the small portable Viair compressors that fit in a small bag? They work great and seems like a lot less hassle than mounting something.



Most of the portable ones don't push nearly enough air.

I guess it's just a different application it's being used for. I have a Viair compressor I keep in the toolbox of my 3/4 ton truck along with a plug kit that has served me just fine. It inflates those tires to 65-70 psi but it's just used for emergencies. I have way bigger air compressors at my house and ranch that are way faster.


Yea they are fine for emergencies for filling 1 tire. But when you are wheeling and lowering tire pressures to 10 psi, those just don't cut it filling 37+ inch tires back up.

On my Jeep, I run an ARB twin compressor. Fill all 40 inch tires up at the same time.
Naveronski
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AG
I have the ARB twin for my Toyota and it's a great compressor. Does tires in just a few minutes and is overkill for the lockers, but...

OP, thanks for posting photos. I didn't realize jeeps could install these inside the body panels, that's pretty slick.
One-Eyed Fat Man
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AG
Our Land Cruiser in Zambia had one. It was mounted on the frame. Came in handy.
https://y.yarn.co/8cbbc300-a8ef-4358-aeb3-c5d6805a6788_text.gif
Centerpole90
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AG
My buddy has a system like this, it's called Kraken I think, fills all 4 tires at one time and monitors it with the TPMS. Pretty cool.

Well done OP.
normaleagle05
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AG
The twin is definitely the gold standard in portable/mounted compressors. I went to the single in my Jeep several years ago because I didn't want it mounted in the cab. Wife and kids are often in the Jeep while the compressor is running and non-cab mount options were limited.

I'll try and get some pictures this weekend of this setup airing all 4 tires at the same time.
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