What is it?

Hello all,
I know this is a stab in the dark! I'm working on a 74 Duster that was a /6 car. I There was a funny looking bracket/strap mounted on the inner fender below the master cylinder. I lost the thing during my current project and trying to determine what it was for and if I should worry about replacing it. It looked like it could have been for the battery cable going to the starter, just don't know.
v/r
Ron

Sounds kinda like you are talking about what is in this discussion. Inner fender below master. Look at this link it may shed some light!

Can anyone tell me what this is?