Hi everyone new here. I have a question to ask. I have a 95 lumina with a 3.1,has 50k original miles. I have power to dome and dashboard, but when I turn the key nothing,and loose all power. I disconnect battery wait several minutes, reconnect it and have everything. But as soon as I turn the key it's a repeat. Any ideas

 

Welcome from Florida. Have you your battery checked? Sounds like it is a battery issue. It could also be the battery cables, check them at both ends for looseness and corrosion.