Beep beep... or not?

[f1fascination]

Hi all, after binning my original horns I picked up a new set of Fiamm's, Ebay, from Israel of all places.
But can anyone offer up a wiring diagram, or point me in the right direction of the correct wiring for the horn relay?
The original relay may or may not be functional, but the new ones came with a fresh relay.
Not as pretty as the old one though.

[colcol]

Use the new relay, as it will be nice and fresh, with no burnt terminals.
The terminal numbers are-,
30 - battery positive,
85 - earth,
86 - from horn switch, positive,
87 - to horns, positive,
You may be able to pull the relays apart, and put the new relay innards into the old relays shell,
Colin.