ok black wire from starter motor goes to the starter solenoid, to the free terminal or where the positive is already coming in?1. starter wire goes to the starter solenoid ( labeled starter solenoid)
2. ground wire goes bolts to the starter mount (edge of starter)
3. postive battery wire goes to the starter solenoid (labeled battery on solenoid)
They are on the GL500 and other models with the main fuse mounted on the side of the solenoid but I don't think the terminals are labelled on the earlier solenoids (nor does it really matter)the solenoid should be labeled "battery" and "starter"