Anti-Theft Alarm System 1978

Went to replace what I thought was a burned out dome light, new one still didnt work, checked fuse box and the fuse for the light was missing (presumably pulled by previous owner?), this fuse also controls all the interior lights, clock, and cigarette lighter, all of which did not work.

So I replaced the fuse with the proper 20 amp fuse and everything worked, all lights, clock, cigarette lighter...  and

the stupid anti-theft alarm, beeping beeping beeping

and I could not get it to stop, tried the key on the door, started the car, opened and reclosed all the doors and hood.......

anyone have an issue like this and what are possible solutions...  i would even just cut the wire to the beeper if I could get to it.. its buried in the front wheel fender...

for now I live without interior lights and clock and cigarette lighter


1978 standard

Hello and good luck.

  lt could be one of several things. The door switches or the hood switch could need adjusting , the alarm switch itself could be defective , or there could be a short between the switch and ground.

ok, i found the horn, at there is a yellow and orangish wire running to the horn, one appears just to be screwed to the bracket as a ground and the other is connected to the horn...

what i've read, and not sure if this is true, that even if I simple remove the wire and the horn no longer sounds, the relays will possibly still be sending the signal to the horn and will drain the battery...  correct?

Hi LSGoose, Cutting the power wire to the horn will stop the beeping, but if the alarm is triggered, the relay and flasher will still be powered. If left this way, the battery will have a higher than normal drain. My "solution" on a previous '78 was to use a battery disconnect whenever leaving the car for more than a day or two, which was not very convenient. Another solution is to disconnect the anti-theft relay in the console. The relay has 5 wires - Black, Orange, Yellow, Lt. Blue and Dk. Blue/White.

Make it stop!