Smittybilt Air Compressor Pressure Switch Modification. Smittybilt 2781 

That's the best set up yet. Clean. Professional and factory looking.

This mod is awesome.

Modified mine this afternoon. Thanks for the overview and video.

Great how-to video. I shamelessly copied your idea for mine and it works fabulously. Thank you!

I was waiting for the video when I saw your mods. Great timing

Definitely like your solution. Looks really clean

Just did mine tonight based off of your video, great instructions and mod love it

Just completed the pressure switch mod!! Great video.

Thank you very much!!

Completed the mod today. Works great!!!! Thanks for posting.

Love the KYD cap. Big fans of their videos, too.

I wanted a way of turning the compressor off remotely, as its mounted in rear of pajero/ montero where the kids 6 and 7 seats used to be. Never thought of pressure switch idea, i purchased a Wireless Remote 12V 24V 120A 200A Battery Switch Relay Control Disconnect from ebay about 30 AUD or 20 usd, i wired it to a twin core cable with anderson plugs on both ends as compressor had previously had an anderson connection. In between tyre inflation i can give it rest and let the air hose go slack by pressing the air trigger. These compresor units are sold in many different colors here in Australian camping stores and auto outlets. The hose and gauge that come with are not great i upgraded to flexzilla and a decent trigger and guage.

Great ill do this before march camping season thanks

also, how did you run those wires from the truck battery out the front grille?

I love how your improving that to fit your needs. Very clever! Thanks for sharing!

Great video!!

i followed your video to the t install the pressure switch you recommend 70/100 compressors just cycles on/off thought it was a bad switch replaced with another and it still cycles on /off without stopping

Good idea!👍🏼🇱🇷

Just finished mine. Excellent idea and how to.

Great vid. Thanks for making it. Followed it to modify my own today.

Great idea . Got scared first time I heard the bang lol

A well made and easy to understand video. Thanks for sharing

Nice mod but wondering if this will work for the Smittybilt 2780 and also I would be airing up tires for a tacoma (hopefully 4 tires simultaneously) but at 40 psi max. Would I use the same switch or do I need a lower psi switch?

great mod and video. thank you for a clearly explained mod.

Copied along with a 5gallon 150psi air tank for constant air . 1/4" ptc fittings ,quick couplers ans 50' of hose .Truck ,trailer and loaded eqpt .all within reach .

Nice clean install 👌🏻

Great video. Thanks for sharing!!!!

which sealant did you use to seal up the holes?

Thank you for this!

Thank you very much 😊

Great video! Sadly my threads didn't line up to do the downward connect, so mine is off to the side exposing the wires. I'll just have to be extra careful as to not break them off or knock loose. Regardless, thanks for posting this step-by-step guide!

whats the difference between turning off the air compressor vs adding a pressure switch? cant i just turn off my compressor to see what psi im at?

So mine works but after about 20-30 seconds after stopping airflow the compressor kicks on for 1-2 seconds and then cuts off and continues Is this normal? I assumed it would stay off completely until I engaged air flow. Or is it just losing pressure somewhere?

For those that are replaceing the air outlet with the adapter, maybe there was a change in the production but the pitch is 1.0 instead of 1.25 M12 thread, at least for mine.

You can easily pry up the switch without having to dissassemble the unit. Snake the wire thru the grommet for the power cords. Much easier.

Great mod. Wondering if it’s possible to have it automatically cutout at the correct driving pressure or close to it.

do you remember which pressure switch you grabbed? there are multiple on/off switches for different psi. thanks for the video

Great video application to how to DUY!!! My tires are 225 65 R17 for Subaru Outback.... I need to lower the air down until 12-14psi and then load the air up until 32-35 psi.... DO I HAVE TO BUY THE PRESSURE SWITCH BETWEEN THOSE PSI I’M GOING TO USE???? or can I use the one you get on Amazon 70on to 100off Thanks for letting me know

Hello, do you have non-return valve? after a few seconds or minutes the compressor does not lose pressure, and the pressure sensor lets the compressor start again?

Could use split wire loom piece over the solenoid to cover

What size is the black hose coming out of the discharge side of the tee fitting? (what size hose barb is needed for the QD?) I thought about doing a Male NPT QD straight out of the Tee fitting, but that seems like it coudl put a lot of strain on the aluminum tube that runs through the handle over time. Seems best to do it the way you have it.

Great video! What adhesive sealant did you use?

Covet, when you attached the M12x1.25 adapter to the compressor's air outlet, was this a smooth fit or did you get an 'unnatural' sensation of jamming after about 2.5 to 3 turns? I did, but with a little tape and pipe dope I got a good seal anyway. Everything works great after the update. Thanks for the great video. One recommendation to ease the somewhat 'fiddly' re-assemble step: Remove the baseplate before reattaching the cap with all the connections inside. This will give you more room to fit the cap behind the triangular chrome cover which extends down from the air outlet connection.

What M/M thread adapter did you use right at the pump handle just behind the beauty cap? I was thinking of threading a female quick coupler in that spot and getting rid of the stock whip

could you use a m/f 1/4 adapter to extend the pressure switch right into the cap?

Hi thank you for the vid! I just got the pump and getting ready to do the mod. Any issues with the back pressure so far? The manual says stopping and restarting can overload and blow a fuse. Recommends to turn the pump on before inflating the tire. Just wanted your thoughts on that. Thanks again

What size pressure switch did you install?

Did you have to use another adapter from the proximal end of the hose to the new T fitting?

Great video. I just did the pressure switch mod and have a question, if you don't mind. Is it unusual for the fittings at the compressor to get pretty hot? I actually did the mod right after buying the compressor; so, I don't have a pre-mod comparison to see if it is hotter or just common. I set up a hose system where I can air up all four of my Jeep tires at once; so, the compressor runs a bit longer than if I were just airing up one tire at a time. Will the compressor still shut off if it overheats? Thanks again for your videos. They are very helpful and much appreciated.

Can you use the same fittings and pressure switch for the Smittybilt 2780 as well?

Did you find the stock rubber leader hose ok or has it got way too hot. I'm waiting for my smittybilt and fittings for the same build but curious if ill need a 12 Braided steel leader hose. Thanks!

Is the small black wire coming from the motor a thermal overload switch?

On your black hose did you change the fitting to make it fit onto the tee

The pressure switch link, links to several psi models. Which did you use?70-100? or larger?

What’s the chance your close to ga , al , Tennessee I would love to pay you to do mine lol

Would this compressor benefit much from an added storage tank?

Can you wire the pressure switch in place of the power switch?

I did this mod with all the parts you've listed. I'm having issues with the pressure switch. Compressor is always on when turned on with pressure or no pressure. I connect the wires to the black lead going into the compressor and not the relay, what am I doing wrong? Any info would be great! Thanks!

So I did the mod and my Smittybuilt stopped working after about 4 air ups. Just wondering if yours is still working? I heard that you really need a relay wired in to the pressure switch as well to handle the high amperage.

After this mod my compressor cycles on and off does that mean there's a air leak

Did you have any problems with your compressor after you did this mod?

What is the size of the black rubber hose? 1/4" NPT MALE on the end that threads into the brass tee but what size is the barbed end? That adapter for air outlet, virtually impossible to get here in Canada. I ordered from an unknown supplier. Lets hope it gets here. M12x1.25, super hard to find. I like the compressor. Very strong. I purchased it for my Class A motorhome. I need big pressures. Tires are cold rated at 110 psi, I run 88 psi. Ridiculous that it doesn't come with a pressure shut off. I used mine the first time and I had to let it run a little bit with the relief valve popping. Compressor was on the other side of Motorhome. I didn't like that at all, I don't think my neighbors at the park liked it either. I was actually quite surprised on how quiet the compressor runs minus the relief valve popping. HaHa. I am going to do a 110 - 140 switch as I need almost a 100 psi. Thanks for the great video.

What gauge wire for the leads going to the pressure switch ?

Just got my smittybuilt and will do the same. One question the pressure switch says on at 70psi and off at 100psi one of the ones in the link you provided. Wouldn't one be needed that is at on at 0psi and off at 100psi?

FYI....the adapter is actual NOT M12x1.25 it has a finer tread.

Great video. What PSI did you go with on the pressure switch?

Does your bleed down and turn back on?

Can you use this with a digital gauge like astro ai hand control lever

Have any of you experienced blown fuses with this set up?

Where are the parts list