Hello everybody.
Problem I can't find the answer to.
Classic situation: low battery after months of inactivity. Buy a charger, think that you will connect it to the battery for a few hours and everything is be solved.
Not at all.
Reading the instructions, there are the warnings in capital letters: "do not connect the negative terminal directly to the battery pole" !!! but to a ground point on the car body or engine block.

Well, what is this point?
This is my question.
After reading a thousand times that you can safely connect the negative pole to the battery, I have not found the answer.
That's right, I don't want to connect the negative clamp to the battery. It is lead acid battery and there is a strong acid smell, when I connect the negative terminal to a point of the body there are sparks, so please don't tell me to connect it directly to the negative pole.
Anyone kind enough to explain to me, pointing to an exact spot of this exact model (year 2001, SE 2,4) to connect the negative clamp? I don't know any names of the engine parts, so please be patient, a photo of the part is the only thing that can help me. As I have already tried: when I connect the negative to an engine bolt and 9V appears on the charger, does it mean that the ground point is too weak? Should it read 12V?
The question remains, before making mistakes, what is the right ground point for the neg. clamp?