Ive looked thru everything and cant figure it out

Ok let's just give the whole story from the top...

Truck has leaked down overnight since I've had it years ago..one day driving down the interstate I hit a bump and the truck almost immediately went to the bump stops so I pulled over turned the truck off and back on and it aired back up and I drove home. In the weeks after that it would do it more often but always air back up. Then it got to where it would only air up when I shook the truck or wiggled the leveling sensor. Then I go to leave a buddies house and the compressor ran but wouldn't air up and I realized the driver side sensor arm was broke.

I ordered a new sensor and put it on..tried the removing the fuse and all of that but the compressor wouldn't kick on. I looked and found the trick removing the front bolt on the sensor so I made it where it would sit as high as possible...air compressor didn't kick on at all....rotated the sensor all the way to low and the air compressor ran for 5-10 seconds but nothing happened....

Anybody have an idea of what's going on? Compressor will air a tire and I've sprayed the bags before and didn't see a leak.