Follow me home
This function activates the dipped beam when the car key is taken out of the ignition switch, the driver's door is opened and the dipswitch is moved to its rearmost position "flash". If the driver's door is closed at any time within the next 30 seconds the dipped beam comes on for a preprogrammed duration.
"FOLLOW ME HOME " means that the car's dipped beam is used when there are no other light sources available. The car's dipped beam will stay on for a certain time after the car key has been removed from the ignition and the driver's door has been closed. This time period can be adjusted in DICE (20--50 seconds).
A number of conditions must be fulfilled before DICE will activate this function.
DICE uses pin 7 to detect that the key has been withdrawn from the ignition switch. DICE then needs to get a message from TWICE concerning the status of the driver's door (OPEN). When the dipswitch (215) is activated, power is supplied to pin 41 on DICE.
The last precondition is fulfilled when TWICE puts a message on the bus concerning the status of the driver's door (CLOSED). The dipped-beam relay is thereupon grounded via pin 4 on DICE for a pre-set time (20--50 seconds), causing the dipped-beam lamps to light up.