CAUTION: Never touch fittings, braided hose or the air compressor with bare hands either during or shortly after use. ON-BOARD SYSTEM/TRAIN HORN WIRING DIAGRAM (FOR REFERENCE ONLY). If compressor runs excessively (i.e., 5 minutes or more), disconnect electrical power to Air Compressor and listen for air leaks in system. Repair any problems and retest; contact Kleinn technical support if problem persists.
Learn how to properly wire a 12 volt air horn with this helpful diagram. Get step-by-step instructions and tips for installation and troubleshooting.. Connect the relay to the horn wire, hook the compressor up with 12-volt power and ground, and connect the compressor's negative terminal to ground Test your new horn - if everything is done right.