Guides
2 articles
Sep 07, 2026// AIR TANK
Train Horn Without Deleting Your Spare Tire: Why a Battery Horn Needs No Tank Space
Spare tire delete kits exist because an air-horn tank and compressor need a two-foot cavity under the truck, and the spare tire well is...
Jul 29, 2026// AIR-PRESSURE
What PSI Does a Train Horn Need? Why Battery Horns Skip the Tank Entirely
Traditional train horn kits need 120–150 PSI of stored air — which means a compressor, tank, pressure switch, and wiring. Here's why pressure controls...