Testing electrical devices on the workbench can be dangerous if directions are not followed completely. The worker must understand the functions of a solenoid and starter button and be able to wire them in place. The worker also needs an understanding of the concept of an in-line fuse holder and its function and must have the ability to use electrical and mechanical tools. Wiring test components in series must also be performed. This method is for bench testing starters only, not their solenoids.
Put on the safety glasses. Put on the heavy gloves. Place the 12-volt battery in a secure place on the bench. Place the starter in a heavy, metal-working vise mounted on top of your workbench with the two large positive and negative terminals facing up.
Use spade connectors for all connections. Connect a number 6 wire long enough to reach the battery to the negative terminal on the starter or the starter frame using a large spade connector. Connect the other end of the wire to the negative post on the battery in the same manner. Do not try to use the solenoid mounted on the battery, if one is present, and make sure all wires are removed from it.
Mount the solenoid on the test bench. Connect a number 6 wire long enough to reach the solenoid to the positive terminal on the starter using a large spade connector. Connect the other end to either large terminal on the solenoid using a large spade connector. Connect a number 6 wire long enough to reach the battery to the other large terminal on the solenoid in the same manner.
Connect the number 6 wire from the solenoid to the positive terminal on the battery. Connect a number 12 wire to the small negative terminal on the solenoid using a small spade connector. Connect the other end to the negative terminal on the battery using a large spade connector.
Mount the starter button on the test bench. Connect a number 12 wire long enough to reach the starter button to the small positive terminal on the solenoid using a small spade connector. Connect the other end to either terminal on the starter button using a small spade connector.
Connect a number 12 wire long enough to reach the battery to the other terminal on the starter button in the same manner. Connect an in-line fuse holder to the end of the wire from the starter button. Connect the other end of the in-line fuse holder to the positive terminal on the battery. Place the 30-amp fuse in the fuse holder.
Check that all connections are tight and in the right place. Check the vise to be sure the starter is firmly held in place. Push the starter button, which will operate the solenoid, which will in turn operate the starter being tested.
