Hi Theo:
Thanks for the reply--I've got to delve a bit more into how the GM
1-wire was set up in the actual vehicles (thanks Steve!). I checked my
Toyota manual and noticed that the internally regulated alternator on my
truck is wired to the charge light, but is not a one-wire setup.
To answer your question as best I can:
"because it used to."
No logic there.
Thanks again
David
Theo Smit wrote:
> The Toyota internally-regulated alternator on my Tiger has provision for a
>charge warning light, and it's on when the ignition is on, but the engine
>isn't running; and it's off when the engine is running, which
> corresponds to the voltage output being high enough to charge the battery.
>When it's cranking, I'm not sure, but I would guess that the light will
>probably be on since the engine won't be turning over fast enough
> for the alternator to cut in. The charge light is wired with one side to the
>ignition circuit and the other to the light output on the alternator. I'm
>curious to know why it's so important that the light be on when
> you're cranking?
>
> Theo
>
> sosnaenergyconsulting wrote:
>
>
>>Hi all:
>>
>>My situation is a little different from Rick's and Steve's, so I could
>>use some feedback also:
>>Mark 1 tiger with a generator.
>>We installed the internally regulated one-wire alternator today.
>>I left the old voltage regulator in place (didn't see any harm).
>>All the wires that formerly connected at the voltage regulator [with the
>>exception of the brown wire with a green stripe--the 'field'
>>wire(?)which we left unconnected] were connected together at one place.
>>Lessee, that'd be:
>>The brown wire to the starter solenoid switch;
>>The brown wire to the ignition/accessories switch;
>>The brown wire to something called the lighting switch;
>>The Big brown wire with yellow stripe from the Alternator;
>>The smaller brown wire with yellow stripe to the idiot light.
>>All sandwiched together.
>>
>>The alternator works and is charging up the battery, however:
>>
>>With the ignition off, the idiot light glows.
>>When the key is turned "on", or the engine is being turned over, the
>>idiot light is off.
>>Smitty says that he couldn't see a way to wire it so that the idiot
>>light is off when the key is off, and he said he couldn't see how to
>>wire it so that the idiot light is on when the car is cranking (as was
>>the case with the generator).
>>Smitty says the light being on when the ignition is off means I've got
>>power to the switch and will drain the battery. He had me remove the
>>light bulb from the idiot light as a way of interrupting this drain.
>>
>>What I'd like is to have the idiot light glow when the engine is being
>>cranked.
>>Also, since I don't currently have an ammeter, it'd be nice if the idiot
>> light glowed if the alternator cuts out.
>>It may just be that with the one-wire alternator, these functions 'ain't
>>gonna happen', but I thought I'd ask:
>>Anybody got some wiring ideas that I can pass on to Smitty?
>>
>>I did pass on Steve's earlier input. Smitty says that the wiring is
>>different from an Alpine to a Tiger--perhaps I explained it poorly to
>>him, though.
>>
>>Thanks in advance for any help.
>>
>>Regards
>>
>>David Sosna
>>
>>Steve Laifman wrote:
>>
>>
>>>Rick,
>>>
>>>Same thing happened in my Alpine in the Mojave desert , visiting
>>>Edward's AFB. The Lucas alternator gave out and I picked up a Toyota
>>>internal regulated alternator from a junk yard and mounted it. Light
>>>would stay on until about 2000 rpm, or a throttle blip. Drove like that
>>>for years. Gave the car to Jay, and he was restoring it and found there
>>>is a feed wire to the battery connected wire that "energizes" the
>>>alternator.
>>>
>>>Once wired like it is supposed to be in the Toyota manual it never
>>>happened again. :-)
>>>
>>>Steve
>>>
>>>flynnr2@btopenworld.com wrote:
>>>
>>>
>>>
>>>>After I replaced my alternator (w/built in regulator) with an identical
>unit, the ignition warning light stays on at idle. Its on at anything under
>about 1000RPM but goes off above that (driving about, etc.)
>>>>
>>>>This is a change in behavior from the previous alternator. Should I be
>worried? Is this a problem?
>>>>
>>>>Comments, opinions, & suggestions welcome ...
>>>>
>>>>
>>>>
>>>>rick
>>>>B9471206 : http://www.tigersunited.com/gallery/RichardFlynn.asp
>>>>
>>>>
>>>>rick
>>>>B9471206 : http://www.tigersunited.com/gallery/RichardFlynn.asp
|