You need 1N5401 rectifier diode 3A 100V (radio shack or any local
electronics parts store if you have one) It will go in like an
inline fuse but with polarity.
One end has a line on it and it will go to the negative side. So on
positive ground car, the line side will go to the power negative
(dash) side. (reverse it for negative ground)
Put a 3 amp inline fuse with it. You might consider putting the fuse
and the rectifier behind the dash.
It is like a one way hydraulic valve. It won't work backwards so you
just reverse the plug.
On Jun 18, 2008, at 11:18 AM, Bob Howard wrote:
> Bob,
> Does the use of the diode mean that if the device works it's OK,
> and
> if it doesn't work there is no harm done -- just reverse the plug?
> Bob
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