  This paper is devoted to the representation theory of quantum coordinate
algebra $\mathbb{C}_q[G]$, for a semisimple Lie group $G$ and a generic
parameter $q$. By inspecting the actions of normal elements on tensor modules,
we generalize a result of Levendorski and Soibelman in [22] for highest weight
modules. For a double Bruhat cell $G^{w_1,w_2}$, we describe the primitive
spectra $\mathrm{prim}\,\mathbb{C}_q[G]_{w_1,w_2}$ in a new fashion, and
construct a bundle of $(w_1,w_2)$ type simple modules onto
$\mathrm{prim}\,\mathbb{C}_q[G]_{w_1,w_2}$, provided
$\mathrm{Supp}(w_1)\cap\mathrm{Supp}(w_2)=\varnothing$ or enough pivot
elements. The fibers of the bundle are shown to be products of the spectrums of
simple modules of 2-dimensional quantum torus $L_q(2)$. As an application of
our theory, we deduce an equivalent condition for the tensor module to be
simple, and construct some simple modules for each primitive ideal when
$G=SL_3(\mathbb{C})$. This completes the Dixmier's program for
$\mathbb{C}_q[SL_3]$. The wiring diagrams, introduced by Fomin and Zelevinsky
in their study of total positivity (cf. [3,9]), is the main tool to compute the
action of generalized quantum minors on tensor modules in the type A case. We
obtain a quantum version of Lindstr\"{o}m's lemma, which plays an important
role in transforming representation problems into combinatorial ones of wiring
diagrams.
