It was a typical set up from stereo shop type places back in the 70’s. They were useless contraptions. Any car thief would simply pop the hood and snip the wire to the horn, made all the easier with the lack of an inner hood release.
They varied in how they were wired, some tied into the door jam switch so that the alarm rings if a door is opened before the alarm is turned off with the fender key. Another variation is the engagement of the starter solenoid triggers the alarm. They generally didn’t interfere with the starting process, just ringing an alarm.
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My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
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