  This paper is a continuation of previous work about the effects of a
phenomenological flavour dependent force in a relativistically covariant
constituent quark model based on the Salpeter equation on the structure of
light-flavoured baryon resonances. Here the longitudinal and transverse
helicity amplitudes as studied experimentally in the electro-excitation of
nucleon- and $\Delta$ resonances are calculated. In particular the amplitudes
for the excitation of three and four star resonances as calculated in a
previous model $\mathcal A$ are compared to those of the novel model $\mathcal
C$ as well as to existing and partially new experimental data such as e.g.
determined by the CB-ELSA collaboration. A brief discussion of some
improvements to model $\mathcal C$ is given after the introduction.
