I was trying to get the dB level and current draw of the originals but couldn't find this information so I knew if I could add it to the originals without a add separate relay and fuse etc. d. Since I couldn't find this information, and also because they are noticeably louder, I simply replaced the originals with these.
π FIAMM 72102 Enhanced Freeway Blaster HIGH Note Horn
9 Review
π Enhanced Safety with the Marco Xtreme Blast Electric Horn - Italian Truck Accessories | Ultra-Loud Car Horn at 120 dB | Dual Compressor for Improved Performance
9 Review
Car compressor Aggressor AGR-75 orange
14 Review
π FARBIN 12V Mini Air Horn, Loud Car Horn with Chrome Zinc Dual Trumpet, Compressor Wire Harness and Button for Trucks, Cars, SUVs, RVs, Motorcycles, Off Road - Mini Version with Button
9 Review