To perform a PIN dump (ie: wipe the PIN from the memory)

1. Remove alarm lid - taking care not to damage the two siren wires

2. Disarm the alarm (Transmitter or PIN)

3. Connect both anti-tamper switch wires to 12v e.g. bike battery positive

4. Ground pin-dump wire - you will hear a strange, duck like sound from the siren

The PIN memory is now set to 0000