Originally Posted by SharkDiver
ok..Judging by all the replys and the fact that the search dont bring up anything ill assume that no one adds any ground wires. Since I already have some Im going to add them and clean up the rest of the connections. I like to use my dremel with a sandpaper disk and clean up all the contact points. If I notice anything ill post it.. Im guessing like alot of my other cars that my headlights may get abit brighter...
As you surmised, It wont hurt anything and can only help in a DC circuit. Might as well do them all - engine to frame and frame to body, and while in the "grounding groove", might as well remove, clean and re-affix the existing battery grounds.
Let us know if you notice any operating improvement.