I once elected to change my entire dashboard. Tge old one was badly warped and i suddenly found a good one at a great price. The indy did the change, but the car wouldnt start. The problem was solved by taking the wiring harness out of the old dashboard and using it in place of the harness in the new one.
I am not sure if this experience applies to you but please think if it does. If so, find a way to test drive this idea before performing actual work.
Also, check if your fusible link is ok. That could be busted.