How about the ECU for fuel injection? <img src="/forums/images/graemlins/smile.gif" alt="" />

For that matter the alternator, brake lights, ignition and the gauges (meter circuit) on my Raider are all live during cranking.

Your right some accessories do disconnect from the battery during cranking. My understanding was that itÆs to allow max power to be available for starting and not for isolation. Turn off the headlights more powr to cranks... Good to have the radio off so you can hear the engine start.

Critical systems you needed to make the vehicle function are all live with no special isolation when the vehicle is being cranked over.

Kevin