no spark

I went to start car this week and I am getting to power no the coil. The msd box is getting power from the battery. Theres also a power wire from ignition to box not sure if I am getting power from there yet just got a tester today. Whats best way to test or location to test that? Any other ideas why I am not getting power to coil? Its all brand new msd 6al box and a new coil. All new wiring. :banghead: