Alpine INE-W990HDMI Quick Reference Manual page 17

Connection Diagram of SPST Switch (sold separately)
(If the ACC power supply is not available)
INE-W990BT
•
If your vehicle has no ACC power supply, add an SPST (Single-Pole, Single-Throw) switch (sold separately) and fuse (sold
separately).
•
The diagram and the fuse amperage shown above are in the case when INE-W990BT is used individually.
•
If the switched power (ignition) lead of the INE-W990BT is connected directly to the positive (+) post of the vehicle's
battery, the INE-W990BT draws some current (several hundred milliamperes) even when its switch is placed in the OFF
position, and the battery may be discharged.
ACC
(Red)
BATTERY
(Yellow)
FUSE (5A)
SPST SW (Optional)
(Optional)
FUSE (20A)
(Optional)
Battery
15
-EN