dc5000?

i bought my setup from airbagit.com i bought the compressor wiring sstuff from avs.com. my question should i run the power of compressor to the 30 or 85 on the black box with all the number 85,86,30 etc....

I assume you're talking about a standard bosch relay. I'd wire the positive lead of the compressor to terminal 30. Terminal 87 would go straight to the battery with an 8 or 10 gauge wire and with a fuse inline. Terminal 87a wouldn't be used. Terminal 85 should be grounded. Terminal 86 should be a switched 12 volt source like the ignition, with a pressure switch in line. (You could also put the pressure switch on the ground side between terminal 85 and ground if you wanted to) I hope this helps...