We're drilling holes into my new Smittybilt 2780 air compressor this week to try and upgrade it to work more like an ARB compressor. Grab a cold drink and relax while I entertain you with my complete lack of common sense and total disregard for factory warranties.

Here's a list of the parts I used to make the SmittyBilt Mod (Attempt at your own risk):

UPDATE: Using the 2780 for a year now we've realized that it's a bit under powered for our setup. No problem getting to 35PSI, but going to 40psi can trigger the thermal cut off after three to three and a half 32" tires. We're upgrading to the 2781 soon and a viewer verified it will fit in the same spot. I would recommend the larger 2781 or similar if doing this project.

SmittyBilt 2781:
https://amzn.to/35V594Z

SmittyBilt 2780:
https://amzn.to/3oz21Ut

Metric to NPT Adapter needed to replace the primary hose attached to the SmittyBilt 2780:
https://amzn.to/2Tj9N6u

NPT 3way T:
https://amzn.to/3oqeGcj

Pressure Switch:
I used 70100 for safety but you could probably go with a 90120PSI switch since the compressor is rated to 150 PSI.
https://amzn.to/3mnN4Tj

Solder Heat Shrink kit:
https://amzn.to/2HwKtam

Air Compressor Lead Hose with Ball Valve:
https://amzn.to/37JgirL

Air compressor Quick Disconnects multipack:
https://amzn.to/2FWhcWh

You'll also need 12" of scrap 1416 gauge wire (low amps between the switch and relay) and two female quick disconnect connectors which you can get in a kit like this: https://amzn.to/2TmIFn4

The above is all you need to add the pressure switch. The plumbing is essentially in the order that the parts are listed above, starting at the metric female thread in the Smittybilt which will be exposed when you remove the existing lead hose.

From there you can use an existing airline and inflator like the ARB kit or go a step farther and convert the yellow airline to a latch on style like I did. You'll need to add a quick disconnect from the kit above to one end and a clip on chuck to the other. For that you'll need the following:

3/16″ Barb to 1/4″ NPT Male Thread:
https://amzn.to/3jrD3mf

Air Chuck:
https://amzn.to/3mbqAVs

If you plan to go the distance and install under the hood you might want to build a manifold like I did. This will also allow you to add a pressure gauge.

Viair 1/4" NPT Manifold:
https://amzn.to/2HrtwOB
$20 Can be had cheaper but this one has a mounting plate.

1/4" NPT plug:
https://amzn.to/37CTslf

Digital Pressure Gauge:
https://amzn.to/31Grtxg

Good luck!

Video Contents
_________________
00:00 Intro
01:28 Advantages of Airing Down Tires Off Road Tires
02:12 SmittyBilt 2780 Review
03:11 SmittyBilt vs. ARB
06:23 Smittybilt Pressure Switch Mod
09:04 Outro

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