"DJ" wrote in message
news:HWTBf.3489$ie3.2792@trndny09...
Tyring to avoid the cost of buying a ready made cord. Any ideas out
there
as to the various ways to construct a cable to download from the
computer
to the GPS. Understand you need a serial DB9 female plug, a 12 volt
power
source (I don't know amperage ) and of course the loose wires from the
GPS
. I have a Garmin 178C and I do know which color wire go where....what
I
need is some creativity or hardware ideas as to how to get them all
together and then still be able to take my GPS and its cable and put
itr
back on the boat,,,Anybody ever done anything like this before??????or
am I
being penny wise and pound foolish for even trying?

I have the Blue Chart software on my computer.....but no data card or
card
reasder (another expensive USB cable).....Thanks much...DJ


USB Cables are cheap.