1985 Big Red 250 GROUND WIRE?

[killerklown]

Picked up a 250es that is missing the battery ground cable. Can someone post a pic of where on the frame its supposed to be ground to?
thanks!

[Flyingw]

The battery negative cable terminates on the engine case just below the starter. Center case bolt, left side. It really doesn't matter which one just as long as you have a good mechanical connection.