+------------+
| ECU |
+------------+
+---------------+
+-----------------+ | IGNITION |
| IGNITION INPUT | +---------------+
+---------------+ +---------------+
| PARKING LIGHT | | STARTER INPUT |
+---------------+ +---------------+
| GROUND | +---------------+
+---------------+ | GROUND |
| GROUND (-) | +---------------+
+---------------+ +---------------+
| POWER | | SIREN |
+---------------+ +---------------+
| | |
| | |
+------>| RIGHT TURN |
| | |
+------->| LEFT TURN |
| | |
+-------->| DOOR LOCK |
| | |
+------->| DOOR UNLOCK |
This is just a basic diagram, and the specific wiring colors and connections may vary depending on your exact Maystar car alarm model and your vehicle. Refer to the installation manual that came with your alarm for detailed information.