wiring harness "T" for HHR SS with premium sound system
 

does anyone know if I can get a "T" wiring harness for the HHR SS with premium sound system. I"m looking at getting the MTX RE-Q5 and wanted to use a "T" adapter if possible to make the install a bit easier. I"m putting infinity kappa components in the front and back, and doing a custom sub in the back that I will share once it is complete.
Thanks.