Horn Relay Replacement

I believe, but don't "quote" me on this.........if you don't HAVE to have the warning buzzer function, replace it with an older 3 terminal one, which may? be more available.

O'Reallys shows an R213 for a '70

http://www.oreillyauto.com/site/c/d...039_2657&keyword=horn+relay#compatibilityTab_