Re: air compressor setup with air horns and exhaust brake
Are all the ports on the tank used, or are one or two plugged?
Drain the air out of the tank and remove a plug. Install a fitting of the appropriate size (available at your local semi truck parts place), then run a hose to a valve of some sort (electrical or mechanical, your choice), then run a hose from the valve to the air horns.
2002 F-350 CC, DRW 4x4. 164,000, Ford AIS, otherwise stock.