Cheap air compressor idea for helper bags?

[Tom]

So, I was wondering, has anyone wired in a cheap tire air compressor for their air supply? Like the kind you get at harbor freight or autozone. I have several sitting around. I also have helper bags on my 98 that just run lines to the rear bumper so every time I need air I'm pulling one of these tire compressors out and hooking it up outside the truck. Seeing at that's a once a month thing, I can't rationalize a $100+ suspension compressor. I was thinking I could pull the stock air supply line off the cheapo and just put an air line fitting into its place, or am I missing something?