Hey guys, I'll try here first in case this is a JDM thing. I was in the house the other day when I heard the most annoying ridiculous sounds blaring from the yard. To my surprise it was coming from my 29 year old HDJ81. Sounds like every toy in the toy story movie blaring in succession. Anyone know if this is a factory unit? I disconnected the batteries overnight and as soon as I reconnected them the alarm roared again. Tried the keys in ignition and door locks etc to no avail. Anyone have info on these?