Operating Current Circuit, Automatic Transmission
The operating circuit goes from the battery's positive terminal to the ignition switch and on to the starting relay, and via the starting relay to terminal 50 on the starter motor, which is the operating current connection on the solenoid.
On cars with automatic transmission, the gear selector lever must be in position P or N if the start relay coil is to receive a current.
The starting relay actuating coil is grounded via the TWICE control module when it has received the ready signal from the immobilizer unit.
WARNING:
Nothing may be connected to the circuit between the generator and the battery. Spikes of up to 100V can occur.