Pair of car horns- untested (Horton Bank BD7)

I have acquired these two car horns - one low pitch one high pitch. They came a box with what looks like two home made brackets and a relay. There were no wiring looms but the picture shows an insert from the box which has a wiring diagram. Please note that I have NOT tested them. They look in fairly good condition, but they are of no use to me. If you would like these then they are offered untested as seen.