VEVOR Onboard Air Compressor Kit 150PSI Offroad Air Compressor Portable Tire Inflator Heavy Duty 3.5CFM Air Pump for Jeep SUV 4x4 Vehicle Compatibility with Air tools, Air horns, Lockers

Directions weren’t the best nor was the wiring harness but I modified it to work for my application and it works perfectly. Just follow a YouTube tutorial for installing I based it off an ARB single

I got the 3cfm compressor which two days ago there were multiple reviews on it saying the harness was confusing, those are now gone, but they are right, this compressor is a knock off of I won’t say the name they're blue, we all know the brand, the compressor build is a good copy but you end up with a power and ground circuit with no relay control, and just a random bit of a wire harness that is nothing close to useable. If you’re good with wiring and understand relays and what gauge wire you need you could make it, oh and you can’t connect the pressure cut off switch with out the relay and wiring. Which if you continued to run over pressure you’d burn up your compressor. otherwise might as well put some battery cable clamps on it and go that route, because what they send is useless they failed on copying the other brands wiring harness, now aside from that because I’ve got no problem making a harness. The description states A duty cycle of 52 minutes run time at 100psi, which time should be more with lower pressure and lower with higher pressure. But we didn’t even make it that far, I thought I’d test the compressor prior to permanently installing in my vehicle, I aired down my jeep tire 33x12.5x15 to 16 psi, connected and turned on the compressor, after 10 minutes still didn’t have my tire to 32 psi, it was about 24, so let’s go longer, about 12 minutes run time, from 16psi to 28 psi, the compressor started sounding really weak, as I got near it the burning electrical smell was amazingly overwhelming, immediately disconnected compressor and when I disconnected air hose some very pungent smoke came out of the air hose. Long story short, if you’re gonna use this in your vehicle, invest in a fire extinguisher, or fork over the big money for the name brand blue onboard air compressors.

I bought two of these and returned them both. One had abrasions on the piston seal, and the other had missing parts like filter and bolts and both had incorrect wire harnesses. The finish between the two were irregular. If your wanting a good CKMA12 ARB copy go with the one on the Enocos store.

Best for your bucks. Portable and fast enough for up to 35 tires

So I recently found this Vevor On-board Air compressor on Amazon for right around $100. I saw a post or two mentioning it other places, but between the questionable reviews on the manufacturer’s website, and the terrible, but ultimately useless reviews on Amazon, I thought I would go into a bit more detail.First thing, from the outside it is a direct copy of the ARB Single compressor. It is just that though, a copy, not a clone. The layout is the same, but there are noticeable cost cutting measures that took place, from a splotchy paint job, to cheapo hardware in certain places. So, same same, but different.Next what’s included in the box. The BOM lists things like a pressure switch, rocker switch, wiring harness, relay, etc. so this would lead you to believe that it has what you need to wire all those things together right? Wrong. The wiring harness is the solenoid harness for installing lockers, and a straight power lead, nothing for wiring in the relay, pressure switch, or rocker switch. Expect to buy some wire for making up this deficiency, a few feet of wire and some crimp on terminals and I had the relay, rocker and pressure switch all connected up.It also comes with a cheap air hose, some quick connects, a few air up accessories, and a roll of Teflon tape. Everything you need to run the air right off the manifold with the pressure switch installed is there. Out of the box, you have what you need to fill a tire.The pressure switch is where I ran into my only real problem. The 40a in-line fuse tends to pop before the included 100/150 pressure switch cuts power to the compressor, it managed to cut the power exactly twice before the fuse popped first, i then repeated this twice more to similar results. I am choosing to just drop down to a 70/100 pressure switch since the compressor is only supposed to draw 35A. I have a hard time believing this thing wouldn’t burn up trying to get to 150psi consistently.In use it got wicked hot, but did manage to inflate all 4 of my 35x12.50r17’s simultaneously from 15 to 38 PSI in 12 minutes flat. So I am happy with the results there.Overall the longevity is going to be what decides if this is a winner or not. I wound up spending just as much on installation components, between a pack of fuses, a braided line to deal with the heat, a replacement pressure switch, wire, relay holder etc. that for $200 I could have gotten a much faster and nicer portable. But I now have onboard air for about $200, so I’m calling it a win.If you can look past the lack of instructions, complete lack of plug and play functionality, don’t actually need it to get to 150psi and want something cheap and dirty. This may be what your looking for. As long as I get a year or two out of it I know I’ll be satisfied with it.

How do you get better instructions? No instructions on how to wire up the pressure switch, relay or rocker switch. Contacted the manufacturer and no response. Did a quick direct wire to see if it would work. Does nicely but gets super super hot blowing up 1 tire from 11psi to 30 in a little over 3 minutes for 37” tires. Unsure if this is worth the so called money savings over the blue ones. Very disappointed in lack of help.

Seems to be ok. Struggles a bit after 80psi. Unit is heavy and extremely loud. *Update* after about 3 months the compressor failed. Used it maybe 10 times. Contacted vevor they sent me a new one right away(3 weeks). 3 minutes in with the new compressor it shuts off and will not turn back on.