At 04:51 AM 9/9/1999 , Paul wrote:
>Peter,
>>I read your post with interest as I am about to install a driving and a
>fog lamp in addition to a stereo (with an external amp). I bought a
>couple of additional Sprite fuse blocks so that I will have six total.
>
>I've heard other people mention using relays. How do they help,
>where can I get them, and how many do I need. Perhaps the List
>would be interested in your response as well as just me.
----
At Paul's request. Understand that I am not an electrical engineer, nor
do
I play one on TV.
In simple terms (my limit) a relay is a remote switch controlled by another
devise (switch). They are useful in reducing the load on a switch so that
the full draw of the consumer (lights, stereo, action) does not go thru
the switch which would necessitate a larger and cumbersome mechanism. They
are also used to lessen the length of wire required which allows for a
smaller gauge of wire.
In the old days, when I put driving lamps on my car, I ran 10 ga. wire
to
a hefty switch on the dash in order to get as much power (or less voltage
drop) to the lights as possible. Now I can run 16ga wire using a relay and
have the lights be switched with my headlights without adding load to the
(flimsy) headlight switch.
So basically, a relay can lessen voltage drop to a devise and lessen
load
on a switch and allow lighter gauge wire.
I hope that's clear. As to specific ways of wiring lamps, etc., others
on
the list are probably better suited, and can likely clarify and enhance my
paltry attempt to answer your questions.
HTH Peter C.
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