jt, if that compressor is coming on on its own, it is because there is a leak either in the air line or one of the air shocks is leaking.
Trust me on that. I went through all that bs with mine and after the second shock started leaking, I pulled the fuse and that's the end of it.
This 2000 is on its last year as far as I'm concerned anyway. Time to downsize, likely to a Corolla.