Message text written by Austin
>>I used to work installing Automated Guided Vehicle Systems. The pertinant
aspect
>of that is that we ran miles of wire inbedded in concrete floors.  When we
needed
>to splice wire that would be buried in concrete we did pretty much as you
>suggested.  The wire was crimp spliced with a bare crimp. Soldered the
>connection.  Brushed with "Scotch-Kote" (the official liquid tape).
Covered with
>heatshrink, and then coated with Scotch-Kote again.  Very permanant. No
failures
><

I deal with systems, including wiring harnesses, inside aircraft fuel
tanks.  We also crimp and solder connections.

A note of caution:  1) use a minimal amount of solder to prevent it from
wicking up the wire & under the insulation.  This will cause premature
failure.  and 2) make sure you clean, clean, and clean again to remove all
of the flux after soldering.  We have a process so we don't even need flux,
but very difficult in a shop environment.

John Fleming
85 Westy (165K, VT)