FIAMM 66025 Grand Prix Chrome Horns The FIAMM Grand Prix delivers the popular European sound through a powerful 12 volt maintenance free compressor and two (one high and one low) chrome plated trumpets. FIAMM horn package Includes: 12 volt maintenance free compressor, relay, tubing, and mounting hardware FIAMM horn is excellent for trucks, vans, cars, RV's, motorcycles and SUV's FIAMM two terminal horn, 12 volt, 135 dB @ 4" (Max amp draw 20)