I like side terminals, but I throw those stupid GM 3/8" bolts with a 5/16" head away. Use a standard 3/8" bolt, and thread a nut all the way on. Tighten the 3/8 bolt into the side terminal (don't get carried away, they will strip out) and use the 3/8" nut to hold the cables tight.
Martin
No, if you are
lucky, they will strip out........
When GM went to all side terminals, we were still putting winches on all our trucks.
First one we ran into with a side terminal battery was my cousin Baitfish2's brand new truck.
We grabbed a bolt and nut, cut away the insulation around the battery terminal, and added the winch power cable.
Did like you said, screwed the bolt down tight with the main battery terminal and winch terminal on the bolt.
Then tightened down the nut to hold it all against the battery terminal.
Few days later, I had to jump him off.
Then, again a day or so after that.
We had left a lot of bolt sticking out, so that it was easy to hook a jumper cable to.
I loosened the nut, and found lots of corrosion under the terminals. Cleaned them off and tightened the nut back up.
Few days later, same thing.
This time, I pulled the bolt out. Found the end of it corroded off. As I was looking at that, I noticed a small drop of liquid easing out of the bolt hole.
Battery acid.
When he tightened the bolt, it pushed the back side of the terminal off and was letting acid ooze around the bolt threads....
I took some plastic repair compound and put it in the hole and forced it in with a bolt.
Then a small blob of Goop just for good measure.
That saved the battery, but from then on, we would tighten the bolt finger tight, back it off a half turn, then tighten the nut while holding the bolt head......