Well I would like to learn. I just want to figure out why my compressor is not kicking on. I put in a new regulator and that didn't solve the problem. What else could it be?

I got an ac recharge kit with the gauge and used that to check the pressure. But didn't really know until my brother looked at it that the compressor wasn't turning on.

So I checked the pressure in the system and added coolant as needed so that's good. Also put a new regulator in the fuse box, but my compressor won't turn on. What else could it be?