Not sure if the horn placement for your forester is the same as my 02 wrx. But take a look behind the front grill. The wrx had 2 horns behind the grill with the security horn mounted by the passenger front strut tower.
We’re the best Subaru Forester Owners Forum to talk about the best years of the Subaru Forester, modifications and reliability history of the Subaru Forester.