Diagram for a 1994 ford f150 horn system - Fixya The horn fuse for this 2002 ford f150 is located in the engine compartment fuse/relay box , heres a diagram of that box , i circled the fuse for the horn, it is in location f1.7. hope this is helpful. also you may want to check the horn relay thats also located in the same box and i circled that also. have a good day. Need a radio wiring diagram for an 1994 ford f150 - Fixya WOULD LIKE TO FIND A WIRING DIAGRAM FOR A 1994 F150 RADIO. Cars & Trucks; Open Questions: 0 Answers Changed fuel pump and crank sensor 98 jeep Cherokee still won't start up. Dec 06, 2019 | Jeep Cars & Trucks. 0 Answers where is the fuse located for the windshield wiper fluid pump on a 2005 hyundia accent gls.