Re: Rand Mcnally GPS

Ron Francois

I also did this using the Rand McNally, although you can run the GPS receiver on 13.8V without a problem. They have been tested to 16V without issues. You'll need some velcro to keep the receiver from walking around your dash or rear deck.

check this link for more details and an excellect review

73's -K0STL

From: Jim Murray <james31@m...>
Date: Sun Jul 9, 2000 10:39am
Subject: Re: Rand Mcnally GPS

Just did this yesterday.
Bought the Rand McNally at Best Buy for $79 and they printed out a rebate
form for $20 at check-out, not a bad deal.
Since I did not wish to use the GPS with a laptop, I cut the bottom section
of the GPS cable off, leaving a single cable going to the GPS unit.

The R/M GPS Unit has 4 internal connections going to the cable with three
wires and a shield:

White Wire - Data Out (Connect to Red Wire on the Kenwood 2.5 mm GPS Jack)
Yellow Wire - Data In (Connect to White Wire on the Kenwood 2.5 mm GPS Jack)
Black Wire/Shield - Ground/Shield (Connect to Shield on the Kenwood 2.5 mm
GPS Jack)

Red Wire - 5VDC from PS/2 Port
Ground from PS/2 Port (Connect to Shield on the Kenwood 2.5 mm GPS Jack)

You will need to provide 5VDC to the Red wire that normally got it's voltage
from the PS2 port. I wired a 7805 voltage regulator to a lighter jack and it
got a bit warmer than I expected it would. It is now external to the jack on
a small heatsink while I figure out the next step. Maybe there is enough
room in the GPS unit for the regulator. In any case, it seems to work well
so far.

Jim Murray KC5QWG

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