You don't, you connect to the battery from the battery of another car. Use the positive cable to connect the two positive electrodes and the negative to connect the two negative electrodes.
On a vehicle the red is positive (+) and the black is negative (-). If they are not color coded the cable connected to the starter is positive and the cable connected to the engine or chassis is negative.
By connect a starter motor backwards I assume you mean put the negative cable where the positive cable would go and then put the positive cable to the negative connection. In that case the starter motor should run backwards. That might be a handy thing to do if you are using a starter motor to power something else such as a winch or maybe a pump.
red to positive, black to negative
The negative cable actually is bolted to the engine block, and the positive cable will go to the solenoid that is attached to the radiator support. On newer models, the solenoid would be attached to the starter, and then, of course, the positive cable would connect at the solenoid down below on the starter.
The positive cable is connected to the alternator and starter. The negative cable is connected to the chassis or engine ground. Positive is red and negative is black. The positive post is slightly larger than the negative post.
you should be able to follow the positive battery cable down to the starter
The positive cable goes to the starter. The negative cable bolts to the engine block.
When connected to the cable which normally runs to the starter it completes the circuit. Electrons flow from the negative terminal to the positive terminal.
Following the cables into the engine compartment. The positive cable will run to the alternator or the starter. The negative cable will just connect to a ground source (engine block, frame, etc.)
Remove negative cable from battery Disconnect positive cable from starter and ignition wire Loosen mounting bolts from starter Remove starter Install new starter in reverse order of removal
There are two posts on the starter solenoid when the starter is in position the top one is for the positive battery cable. The bottom one should have a very short cable that enters the starter casing. I just replaced the starter in my 98 mazda protege yesterday.
It depends on the make and model. If you follow the positive battery cable you should find the starter.