tileguy,
that problem was more or less with the first year production models in that P & C series truck. Since then they have improved on the problems in the harnesses.
occasionally i still do see it once in a blue moon but not near as much as i did the first year those trucks came out.

after seeing the radical change they made in the materials in the harnesses, mainly the wire which is now less flexible and the core of the wire is harder and less strands , it just cant take the bends and vibration like the old type wire they used to use.
The engineer and purchasing agent that believed the suplier saying this wire was better need to have their nuuts cut off hehehe

this is just my opinion of course but it is what it is, i call it like i see it :o)