0 voltage inside the car

[Jitterbug24]

I'm working on a 1980 malibu
I've got 12V everywhere in the engine bay where I should...including on the engine bay side of the firewall plug. Firewall plug connections look clean yet ibahve 0 voltage as soon as it passed through the firewall

 

[bs009]

Wonder if your interior ground straps aren't connected or the frame isn't grounded to the battery?
There's a ground wire on my car by the driver side floorboards for the body that you might need to connect to the engine or frame

 

[SSMonteMan]

Do any of the pins in the firewall plug back out, so it's not making contact inside the plug? Maybe one is bent and not going into place?

 

[L92 OLDS]

I'm working on a 1980 malibu
I've got 12V everywhere in the engine bay where I should...including on the engine bay side of the firewall plug. Firewall plug connections look clean yet ibahve 0 voltage as soon as it passed through the firewall

Welcome to the forum. Have you checked your fusible links?