Higher quality terminals
Chad,
While on this subject, I would suggest an alternative to the Amp brand terminals sold by ACS and others. Purchase Burndy brand terminals (available at your local industrial/commercial electrical supply store. These are much stouter than the Amp terminals.
The Amp terminals are made from a single layer of flat copper stock. Because of this, they have a brazed split in the barrel area (weak point).
The Burndy terminals are made from copper tubing. The terminal end is pressed flat, so it is twice as thick and less likely to fracture from vibration fatigue. The barrel end has no split, so it has no weak spot. I learned this trick from the President of my local EAA chapter. He's an avionics tech. I purchased mine from my local Graybar Electrical warehouse. If you have a friend who is an commerical electrician, he can direct you to a local source. I HIGHLY recommend using Burndy terminals for the starter, starter contactor, main contactor and alternator terminals. These connections are in a high vibration environment.
Burndy terminals can be crimped or soldered. My chapter president loaned me his Burndy terminal crimpers. They look like a set of bolt cutters. They have a built in set of adjustable dies, to cover from #8 to #00. I recommend covering the connection with 3M's "triple thickness" heat shrink tubing.
I just checked FCI's web site (parent company of Burndy) They've changed the web site (for the worse) and I can't give you a direct web link to what you would need. I did discover that Ace Hardware carries Burndy terminals, so perhaps this would be the easiest source for them.
Charlie Kuss