Cable Pinout

I am looking for the pinout for a GTM20 cable, specifically the unit
plug. Mostly need the power pins and cable colors, as the traffic
function isn't necessary.

If anyone know the pinout or where I could find it, many thanks in
advance!!!!

A Computer User wrote:


This is from the GPSPassion forums:

http://www.gpspassion.com/FORUMSEN/topic.asp?TOPIC_ID=91718&whichpage=2

"..I disassembled the cable ends and the docking mount to identify the
pin out There are 10 pins on the back of the Nuvi and they conform to:
Pin 1 - mic input +
Pin 2 - mic input -
Pin 3 - DATA RX presumed(yellow wire in cable)
Pin 4 - serial wire ground presumed (black wire in cable)
Pin 5 - Ground
Pin 6 - ? - (green wire in cable)
Pin 7 - serial TX presumed (white wire in cable)
Pin 8 - ? (Red wire in cable)
Pin 9 - 12V + (combined w/ 10)
Pin 10 - 12V+ (combined with 9)..."

It is not the GTM20 but it might give you some clues.

Jack

Thanks, I'll give that a shot!