on you horn,(never mind if I misunderstood that , part, read fast cause net/laptop probs). weak/primitive simple montero horn ,,it just ground when you push the horn, unlike a good old american truck. I have a 2 horn system off an old truck with an old timey horn relay. Get a cheap beep beep replacement horn to pass inspection. Check for corrosion on horn terminal, sometimes thats all that wrong 'specialy back east.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.