The following is a typical instruction set found in most cars manuals: Topic: starter system troubles Procedures: Try to crank the starter. If it is dead or cranks slowly, turn on the headlights. If the headlights are bright (or dim only slightly), the trouble is either in the starter itself, the solenoid, or in the wiring. To find the trouble, short the two large solenoid terminals together (not to ground). If the starter cranks normally, the problem is in the wiring or in the solenoid; check them up to the ignition switch. If the starter does not work normally check the bushings. If the bushings are good, send the starter to a test station or replace it. If the headlights are out or very dim, check the battery. If the battery is OK, check the wiring for breaks, shorts, or dirty connections. If the battery and connecting wires are not at fault, turn the headlights on and try to crank the starter. If the lights dim drastically, it is probably because the starter is shorted to ground. Have the starter tested or replace it. Now, translate the above information into (6) rules ONLY.