c88

[c88]

Is there a single relay/connection that would knock out completely the power to the car?  No lights, no ignition switch, flashers etc. Nothing!  Happened all at once after some intermittent problems with the ignition switchc88 

[Ωhm]

Start with the battery cables, plus and minus, engine block ground, battery plus to starter relay and all the fusible links.

[Pete M]

usually when that happened to me I fixed it by cleaning the cables and battery terminals.