  This paper describes the extension of the Modified Observables technique in
estimating simultaneously more than one Trilinear Gauge Couplings. The optimal
properties, unbiasedness and consistent error estimation of this method are
demonstrated by Monte Carlo experimentation using $\ell \nu jj $ four-fermion
final state topologies. Emphasis is given in the determination of the expected
sensitivities in estimating the $\lambda_{\gamma} - \Delta g_{1}^{z}$ and
$\Delta k_{\gamma} - \Delta g_{1}^{z}$ pair of couplings with data from the 183
GeV LEPII run.
