i ordered mine from crutchfield..if you have a rectangular plug and a square one, you definitly need the bypass harness, regardless if your door panel says premium sound system or not...mine doesn't say it but i had the square plug, which means the bypass harness is required...now i sit and wait for the ups man...

99'Contour SVT #1766 of 2760
stock-for now, mods in the making
pionner deh-4400 cd/xm head unit
pioneer 4x6 component plates(front)
pioneer 3-way 6x9 (back)
(2)8" Boston Accoustic Rally Series subwoofers
Alpine 3527 amplifier
MTX RT-XO1A electronic crossover