The "Mazda Bongo" is the most common vehicle that our alarm is fitted to with over 3000 sales, the 100mm screw item is recommended for it.
The "Landrover Defender TD5" needs a 90mm Screw.
This alarm can be fitted to any vehicle that has a plastic header tank and is 12 Volt negative ground.
(24 Volt alarm is also available Click Here )
The circuit works by the coolant conducting electricity through it, and holding the alarm off.
The circuit is from one screw through the coolant to the other screw.
No coolant means no flow of electricity and the alarm switches on.
If your header tank is metal It can also be used with a float switch (see bottom of tet)
Sensor wires are 2.2 Metres long.
Ring terminals crimped on sensor wires and stainless steel self-tapping screws.
Ring terminal on ground wire.
The new circuit is smaller and is covered with a self-adhesive pad that insulates from being shorted to any metal parts,
and can be used to attach it to any convenient flat clean surface.
Most float switches have the option of N/C or N/O contacts, The sensor wires are connected to the N/C pair.
Some are N/C only and can be used.
Some are N/O only and cannot be used.
N/C means:- Normally closed contacts.
N/O means:- Normally open contacts.