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Old 12 Nov 2006, 02:26 pm
jim beam
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Default Re: Parasitic Drain - Bulb Trick

dold@XReXXParas.usenet.us.com wrote:
> In rec.autos.makers.honda sharx333 <emil.santos@gmail.com> wrote:
>> I don't know the exact rating of the bulb (aftermarket dome/trunk
>> light), but it glowed brightly. (All doors/trunk was closed, key off)

>
> That might be a low wattage lamp, and glow brightly at a low current draw.
> A stoplight bulb is a better choice, perhaps. I could look at autozone.com
> to find the dome light bulb number, and then sylvania.com for the bulb
> specs, but I think you found your culprit.
>
>> I tried pulling underhood fuses and even disconnecting the alternator,
>> with no result. Then I tried pulling the cabin fuses, and I found that
>> it was the Pioneer head unit that was pulling most of the power (for
>> the preset memory, I guess).

>
> I think you are indicating that 170mA made the bulb glow dimly, and the
> Pioneer made it bright. That's not good. The pioneer should only draw a
> few milliamps in standby. There should be a figure in the manual.
> There should also be a standby control on the Pioneer.
>
> A voltage supplied to the Pioneer that is always on is expected to be a
> heavy current feed for the amplifier, that also draws a tiny amount of
> power in standby. There should be another switched control that comes on
> with the radio or ignition that cause the Pioneer to turn on its
> amplifiers. I think yours is switched on all the time.
>
> Or maybe not... ;-) Check the manual for some specs on the Pioneer.
>

but the 170mA is /after/ the audio is disconnected! yes, the audio
needs to be addressed, but there's still unusually high residual drain.
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