Selonoid help

So I have the shocker xl from Hornblasters. I just set it up. When the compressor fires up. With the switch off. I still have air blowing out of one air line. Just one of 4. What could be the issue. Thanks.

Is your solenoid installed correctly? There should be an arrow on the solenoid indication air flow direction.

It’s hooked up the right way

Sounds Like a defective Solenoid, Give HB a call and They will send you a new one. I have had one bad right out of the box.