  We present preliminary evidence of BCS diquark condensation in the 3+1
dimensional Nambu-Jona-Lasinio (NJL) model at non-zero chemical potential (mu)
on the lattice. Large N results are used to match the model's parameters to low
energy, zero density phenomenology. A diquark source j is added in a partially
quenched approximation to enable the measurement of lattice diquark
observables. In particular measurements are made of the diquark condensate and
susceptibilities as functions of j which support the existence of a BCS phase
at high mu.
