Hi ebxmple and bjc,still trying with this before auto elect., I've set a good MA meter on the battery and initial current is 250ma drops to 140ma when the system goes to sleep. Do you have to start engine and turn off also turn the ICC on/off and run central locking to initialize the system before you check current draw? Working my way through the fuses, Had siren apart : ni-cad batteries are ok. I've had light connectors apart and sprayed with WD40, seem to be ok Do have any idea where the cpu fuses are located ? I'll check its current draw. I'm still checking the glove box and boot lights. On something a little unrelated, these calcium batteries are difficult to get to a full charge. thankyou again, regards