The test switch allows testing of the installed system. To test the system, turn off the ignition and press the test switch. The switch is usually located underneath the dash on the drivers side. The battery should be disconnected and the dash mounted indicator should be blinking. Press the reset switch to reconnect the battery. Turn the ignition switch on, but DO NOT start the engine. Again press the test switch. The disconnect relay should click, but remain on. The dash indicator should not be blinking. If these steps work, the system is working properly.