If your vehicle has a starter solenoid out by the battery and fender well, then I have provided an image that will assist you and it will connect like so;
1. Connection 1 should have the Pos
. (+) battery cable and all of the wires with the large eyelet connectors from the wiring harness connected to it, except for the large cable that runs down to the starter.
2. Connection 2 should only have the large cable going down to the starter connected to it, and there should be no other wire connected there.
3. Connection 3 is the "S" terminal on the starter solenoid, and it is the wire with the small push on connector that is hot only when the key is in the "start" position, usually it is a red wire with a blue stripe, but that is not always the case.
4. Connection 4 is the "I" connection on the starter solenoid and it feeds current back into the ignition, and it is not used on a lot of vehicles after 1981, but if your vehicle has it it will be a small push on connector that will not have any power from it at all, and it will usually be a black wire with a white stripe, but that is not always so.
If the starter in your vehicle has the solenoid mounted on the starter then it will connect in a similar way, and the Pos. (+) battery cable along with all of the wires that have the large eyelet connectors on them will be connected together on the upper large terminal on the starter solenoid, and the wire with the smaller eyelet connector on it will be connected to the "S" terminal on the starter solenoid, and the "I" terminal if it even has one should not be used.