Transport in one-dimensional (1D) wires show interesting properties due to restricted 1D phase space. We calculate 1D transport properties to a controlled accuracy and examine the effect of combined elastic and inelastic scattering on the conductance G and the thermoelectric power S of a single-quantum-well wire (SQWR) and tunnel-coupled double-quantum-well wires (DQWR's) in a perpendicular magnetic field. The field dependence of G and S are strikingly different in ballistic and diffusive regimes. Interwell tunneling in DQWR's distorts the conductance and the TEP drastically from those of a SQWR and yields a sign anomaly for S. (C) 2004 Elsevier B.V. All rights reserved.