much appreciated SVT, you are correct they were plug and play!
all i needed to do was use a 8mm wrench, remove the bolt, remove the single tone chincy horn (srsly Ford?!) then i modified the explorer bracket slightly
the arm thats bent in, inverse it, bend it out instead and rebend the tab. Loosen the nuts to rotate the horns so they face down for water ect.
bend the locking tab flat so it'll sit flush, plug harness back in, refasten the bolt.
Horn sounds just like my former explorer did, factory LOUD. 15 minute mod.
Explorer Horn 2005-2010 6L2Z-13832-AB