1 Installation
The relay is installed into fuse/relay block on the place of regular rear window heating relay (of 90.3747-10 type).
2 Operation
The relay is controlled by regular rear window heater button.
2.1 Heating (for 15 minutes) and timer ON is launched by the pressure of the button. The second pressure turns the heating OFF.
2.2 Repeated ON is launched by:
2.2.1 Button pressure- in case nonfixed button is used.
2.2.2 Button releasing and pressure once again – in case fixed button is used.
NOTE: In case voltage is lower than OFF level the relay switched the heater OFF and the time is still being counting. As soon as voltage reaches ON voltage the relay switches the heater ON for the rest time. This allows to avoid battery discharging.