> I searched the archives and found that on the heater blower-to take it from
> 12v to 6v the resistor is approx 1 ohm, is what all the vendors sell. But
> to take 12v down to 6v exactly, the archived message said it was .6 ohm.
> But all vendors sell the 50w 1 ohm resistor for this purpose.
> Greg will hopefully still give you the value that he used. --wayne
>
I probably should mind my own business here but (besides being a
busybody) I'm afraid you'll damage your gauge. IMHO, 1 (or .6)
ohms would be way to small. The gauge probably doesn't use much
current at all so the voltage drop across a 1 ohm resistor in
series would be almost nothing so the gauge would see the full 12
volts Remember ohms law? voltage is equal to the resistance X the
current. If the 1 ohm resistor were to drop 6 volts it would have
to have 6 amps flowing through it. You could measure the sending
unit (I think they're like 50 ohms) than make the series resister
the same, that should cut the voltage in half, or maybe a 6 volt
zener diode.
--
Ben Bennett
Inside every old person is a young person wondering what the hell
happened.
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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