Help identifying this part ? (1 Viewer)

[Nolan]

Need some help with this part. Attaches to the wiring loom at the same point the charging line comes out and goes to the battery.
This 40 is a 1977

 

[middlecalf]

Location and green wires tell me it’s a horn relay.

 

[brian]

yeap horn relay

 

[Dizzy]

BTW, the relay depends on the ground on the screw that goes into the fender, mine didn't dependably work until I dealt with corrosion - wouldn't want to find out that my horn doesn't work if I was trying to use it in traffic.