No power at key

Hi there, I have performed all the tests that you suggested with the exception of the ammeter test and here is what I found: zero volts. However, the bulkhead connector slots were ugly at the "J" (fusible link) & "P" (10 or 12 gauge black) slots so I hardwired them together under the dash thereby bypassing the bulkhead connector and bulkhead. Made no difference. I believe that these 2 wires connect to the ammeter. I am waiting for my son to come over on Tuesday so that he can help me with the ammeter test. In the meantime, should I use a lighted circuit tester to check all of the connections under the hood? As stated, no electrical pro here lol. Re the service manual...will send PM.