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After having had both portable and permanent air compressors I personally think a portable system is superior. I love my ARB twin compressor with tank and briefcase. I strap it to the bed of my truck and it rides there always. When I need it I can pull it out. If I want to use it elsewhere it’s too easy as well. On the other hand when I need everything out of the truck it’s simple enough to just remove the compressor.
The main power feed has to go to the battery. With the ARB there is a trigger wire that can go to the switch, which is what I did. I actually use the switch that comes with it which I mounted near the compressor under the back seat, but the upfitter switch powers that, because I found that sometimes things in the back may shift and hit the power button. So it can be "on" but unless the upfitter switch is on the compressor will not run, and visa versa.Are you guys powering the ARB via one of the auxiliary switches ? Or going right into the battery ?