I will be installing an Alpine head unit soon and was curious how much
power is drained from the battery in the constant source?Is it minimal?
The only reason i can think of using this source is because of the
clock. Is there any advantage to using the constant source over the
switched source? Thanks.

wrote in message
oups.com...
I will be installing an Alpine head unit soon and was curious how much
power is drained from the battery in the constant source?Is it minimal?
The only reason i can think of using this source is because of the
clock. Is there any advantage to using the constant source over the
switched source? Thanks.


There is hardly any draw on the battery when the unit is off. It is used for
keeping the clock and your memory presets from resetting. If you hook
up both power sources to the switched source, your clock, radio presets,
bass and treble settings will all reset to default every time you turn off
the
key. If you hook both to constant battery source, you will have to manually
turn the unit off when you exit the vehicle

"e-nigma" wrote in message
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wrote in message
oups.com...
I will be installing an Alpine head unit soon and was curious how much
power is drained from the battery in the constant source?Is it minimal?
The only reason i can think of using this source is because of the
clock. Is there any advantage to using the constant source over the
switched source? Thanks.


There is hardly any draw on the battery when the unit is off. It is used
for
keeping the clock and your memory presets from resetting. If you hook
up both power sources to the switched source, your clock, radio presets,
bass and treble settings will all reset to default every time you turn off
the
key. If you hook both to constant battery source, you will have to
manually
turn the unit off when you exit the vehicle


Does your head unit have 2 live wires: a switched live and a constant live?

If yes then you dont need to have it on a constant live to keep the clock
settings. The switched live will turn off the HU when the ignition is off
and the constant live will keep the clock, radio sations, etc. in memory.