2003

Infiniti fx35

146k

V6 3.5 sport

The horn used to honk when I set the alarm,  now it doesn't....?  I've tried pushing luck and unlock together,  using the key to lock and set alarm, etc... nothing.  I think it started doing this after I replaced my bcm.  I replaced it hoping it was what was preventing ALL my locks from locking and unlocking by remote or button.  But no,  they were all bad, at once,  go figure.  But after I replaced it, I think,  it stopped.  Or it was after I replaced the radio.  Idk. And yes it is set to sound on the radio in settings.  Horn works just fine(so does my finger but hey,  it's Vegas), so I don't think it's the clock ring.  I've also removed battery terminals and drained the electrical system resetting everything.  Horn relay is good(obviously, if pushing the horn works right?)  I also threw my voltage tester on the bcm and tested every wire while pushing lock twice on my remote(prob not the best for new door lock actuators,  but I've got after market actuators I'll start putting in if they go bad, and I'm on my last ounce of sanity trying to figure out wtf!?), but never got a signal from one for it.  Its bugging me cause i AM an electrician, but automotive is different from anything else. I even checked the hood switch,  and all the door switches.  All good.  Is there a reason there are two horns under the hood??? if I could reach the one,  I'd throw my tester on it and set it to record max voltage and hit the remote,  but I can't and I don't have time to rip the front of my car apart to do it.  Is one controlled manually and the other electronically? I've exhausted what knowledge I have to test anything else.  I'm about to just start replacing electrical things with new ones. Any  ideas💡???

(Side note: did you know the back hatch on this car only opens if the front passenger door is unlocked, either by remote, button,  or manually unlocking the door??  That blew my mind.... is that right???)