Where abouts are the main earth points in the series 2 engine bay?

Just been comparing my earths in my Astra GTE (dont boo! ) and mine are:

Alternator to Block
Gearbox to Chassis
Slam Panel to Battery

But on my bros RS, i couldnt see one from the Alternator?

Also, the main earth from the battery negative to the chassis seems really thin and flimsy. The standard one on my Astra is like double the width.

Could someone list where all the major earths are on the RS please?

Ta.