yes, the ignition power feed through the bulkhead connector. These connections are now over 30 years old and failing fast. Clean the connection as best possible and reattach. You can confirm that you have 12 volts feeding INTO the connection from under the dash with the ignition in the run position. On my 70 cuda the connection is the in the first vertical row closest to the steering column, second from the bottom. Your's may be different. I ran a completely separate bypass to eliminate the need for this critical connection entirely, but you may not be willing to make that mod.