I generally do the shrinking with a butane cigarette lighter.  Come nearby
from two or three directions until there is enough shrinkage or
melting/burning begins.  An aim-n-flame type of grill/firplace lighter is
easier on the thumb.
  If the ends really won't shrink, try some "Liquid Tape" type of product.

Larry A.

On Mon, Oct 7, 2013 at 2:23 PM, David M <covrambles@yahoo.com> wrote:

> To reinstall my headlight I finally found some connectors that would work
> (3M ones from Walmart were useless) at Harbor Freight Tools. These are the
> kind that the wires slip in at each end you crimp them on and then
> heat-shrink the covering.
> Well all went well till the last step. Exactly how much heat do these
> require and for how long? (no mention on package). I used my daughters
> hair-dryer on the highest heat setting about one inch away for 5 minutes
> until I could smell burning. The center part shrank but the ends, where the
> shrinkage is really needed did not shrink at all. So both ends are now open
> to moisture. Anyone have a clue? This replacement of the 9004 socket is
> turning into a major project.
>
>
>
> ________________________________
>