Originally Posted by simplyconnected
Nonetheless, there is a ground strap.
Running with one ground wire is like putting all your connections in a big series. You found out, when the ground wire failed, nothing worked in the car. Having a separate body ground makes good sense and it may forewarn you when connections start going bad. These cars are very old. It's amazing they still work as well as they do. - Dave
On a Flairbird the ground strap is the negative cable, a long one!.
It runs from the battery down to the lower inner fender/'frame' area where it's attached to a bolt that grounds it - then it continues on to the engine block where again it has a bolt grounding it, all one cable.