Build this cmos based 12-volt or 6-volt motorcycle alarm using cheap off-the-shelf components.
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Motorcycle Alarm No.3 - Photograph

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This is a photograph of the Cmos 4011 based Motorcycle Alarm No.3. The circuit features an intermittent siren output and automatic reset. It can be operated manually using a key-switch or a hidden switch - but it can also be wired to set itself automatically when you turn-off the ignition. By adding external relays you can immobilize the bike - flash the lights etc. It's easily adapted for a 6-volt system - so it will protect your "Classic Bike". And the standby current is virtually zero - so it won't drain your battery.
A Photograph Of Ron J's Cmos Based
Motorcycle Alarm No.3 - Circuit Board


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