  Employing techniques recently developed in the context of the Fokker--Planck
approach to electron transport in disordered systems we calculate the
conductance length correlation function $< \delta g(L) \delta g(L+\Delta L) >$
for quasi 1d wires. Our result is valid for arbitrary lengths L and $\Delta L$.
In the metallic limit the correlation function is given by a squared
Lorentzian. In the localized regime it decays exponentially in both L and
$\Delta L$. The correlation length is proportional to L in the metallic regime
and saturates at a value approximately given by the localization length $\xi$
as $L\gg\xi$.
