  We present an analysis of high precision V light curves (LC) for 18 local
Type Ia Supernovae, SNe Ia, as obtained with the same telescope and setup at
the Las Campanas Observatory (LCO). This homogeneity provides an intrinsic
accuracy a few hundreds of a magnitude both with respect to individual LCs and
between different objects. Based on the Single Degenerate Scenario, SD, we
identify patterns which have been predicted by model calculations as signatures
of the progenitor and accretion rate which change the explosion energy and the
amount of electron capture, respectively. Using these templates as principle
components and the overdetermined system of SN pairs, we reconstruct the
properties of progenitors and progenitor systems. All LCO SNe Ia follow the
brightness decline relation but 2001ay. After subtraction of the two
components, the remaining scatter is reduced to 0.01-0.03m. Type SNe Ia seem to
originate from progenitors with Main Sequence masses of 3Mo with the exception
of two subluminous SNe Ia with < 2Mo. The component analysis indicates a wide
range of accretion rates in the progenitor systems closing the gap to accretion
induced collapses (AIC). SN1991t-like objects show differences in $dm15$ but no
tracers of our secondary parameters. This may point to a different origin such
as DD-Scenario or the Pulsating Delayed Detonations. SN2001ay does not follow
the decline relation. It can be understood in the framework of C-rich WDs, and
this group may produce an anti-Phillips relation. We suggest that this may be a
result of a common envelope phase and mixing during central He burning as in
SN1987A.
