Under the hood... I believe between the front of the passenger front wheel well and the battery on that side (if you have a PSD and two batteries). You'll probably have to remove the windshield washer fluid resevoir to even see it, is my guess.
I don't know any of this for sure, as I've never attempted it, but I've read it a few times, so I'm going off of memory here.
* Sold * 2000 F350 7.3 CC LB DRW 4x4 4R100 4.10 Lariat
ISSPRO gauges, DIY Tymar, straight piped, ITP boost regulator/tee, ATS housing, BBHA, CCV Mod, SS HPX, DP-Tuner, BTS-VB, lots of LEDs, and more... My Truck Pics
It is on the passanger side. In front of the wheel well in the inner fender. You have to take the wheel well/fender liner out to get to it. If you need to replace it, I would just mount a new horn somewhere and splice into the wires.
2002 F-350, 7.3PSD, SRW, Auto,
4X4, CC, LB, Oilguard Bypass
3.73, ISSPRO Gauges,
No Door Dinger, Int Lts Off Swch,
4 WD Low to 2 WD Low Switch,
Extra Trans Cooler, Zoodad Mod,
Before coolers trans fltr,
Coolant fltr, Air horns
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