There is no starter relay on these models.
The start signal power comes from the ignition switch when the switch is turned to the start position. It is a yellow wire coming from the ignition switch.
The power then goes into the clutch switch (manual transmissions) or into the transmission position switch (automatic transmissions).
On manual transmissions, when the clutch pedal is depressed the switch sends power out to the starter solenoid through a purple wire.
On automatic transmissions, the transmission position switch sends power to the starter solenoid if the transmission is in neutral or park through also a purple wire.
The starter solenoid is located on the starter assembly. The solenoid has a large red wire which comes directly from the battery and should have battery voltage at all times. It also has a short wire going to the starter motor. The solenoid and starter motor is grounded through its mounting bolts. When power is applied on the purple wire, the starter solenoid closes a connection and sends power to the starter motor. This engages the starter motor which turns the engine over for starting purposes.