Engineer said:
...The thing is these cables are not designed to be repeated flexed...
That's an interesting observation, and it deserves a bit of elaboration.
Garmin makes two different kinds of cables for their GPSRs. One type - the most common type, and the type that Blue was using - is a cable that is intended for use inside an automobile. This is what ships with just about every Garmin GPSR. A perfect example of it is a cable that has a speaker on the end of it, as well as the cigarette lighter plug.
The other type of cable available from Garmin is a cable that is intended to be used on a motorcycle. This type of cable has an entirely different construction. It has a rubber shield around the outside of it, rather than a plastic shield. The rubber is of such a specification that it remains flexible at low temperatures, and is resistant to abrasion and to oil, fuel, and other environmental factors that can be expected on a moto. The construction of the little tiny wires inside the motorcycle cable is also a bit different - because it is expected that this cable will constantly be flexed, the braiding of the tiny wires is different.
The only problem, of course, is that the motorcycle cable does not have a built in speaker at the end of it. Such is life.
If you would like to see an example of a motorcycle-specific cable that is available from Garmin, just go to the accessories section of the Garmin website. For example, to view a motorcycle cable for a 2xxx series GPSR (26xx, 27xx, 28xx and so on), click on this link:
StreetPilot 2xxx GPS Accessories. You'll see that the cables that are designed for moto use are clearly identified as such.
Michael