[TR] TR6 ground wire..

[McGaheyRx at aol.com]

...the one that comes out of the wiring harness in 2 strands and attaches  
via ring terminal to the bolt on top of the steering rack - what purpose 
does  this serve? 
I am installing a NEW steering rack which has no provision for attaching  
any wire to it and it is not immediately obvious to me whether i need to 
attach  that wire to some other  ground point - or ground the rack at some other 
 point - or both?
 
Thanks,
Jack Mc