Red Double Trumpet Air Horns with Compressor (Includes Relay)
Package: 1 X Tube 1 X Large Horn 1 X Small Horn 1 X Compressor 1 X Junction Fixing Nuts, Bolts & Relay
Suitable for all 12V vehicles such as cars,boats,trucks,tractors,vans.
Must be installed/wired using a 4 pin relay. You will not get the maximum performance from the horn without using a relay. You may also cause damage to vehicles original wiring system by not using a relay.