Classic car alarm
Alarm for a classic car: what works and what doesn't
Looking for an alarm for your classic car, or is the current system behaving unreliably? On this page you'll read where things typically go wrong in practice with classic cars.
Why a universal alarm often falls short here
A universal system assumes a modern car: constant voltage, predictable tap-off points, a sealed interior. A classic car has none of that, so you get false alarms, voltage problems and a drained battery.
- Sensors set too sensitively for a classic interior
- Standby current that drains a rarely used battery
- Tap-off points that overload old circuits
- Modules with nowhere decent to be hidden
What we pay attention to in a classic car
- Interfering with the original wiring as little as possible
- Connection methods that can later be reversed
- Sensor settings matched to the vehicle
- Standby current in proportion to how often you drive
- Neat, discreet mounting of modules and cables
Existing alarm or new alarm?
If an aftermarket system is already fitted, that is examined first. If the module still works, repairing or adjusting it is usually the logical step. If the module is worn out or the installation is poor, rebuilding from scratch is neater and cheaper in the long run.
Frequently asked questions
Questions about this service
Ready to have this checked out?
Tell us which vehicle you have, exactly what's happening and where the car is. You'll get honest advice on what's technically and economically sensible.