Per your photo, that is not the stock location for the relay or the horns. The relay is normally mounted on the firewall
and the horns on the core support. Someone changed it and left the old one on the firewall. If you are OK with the location
leave it or you can move them.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine