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Hi all sifus

I am going to DIY installing recently bought pivot 5 point grounding wire.

I bought it in the first place after google around where quite a lot of people installing it, especially for old cars like mine (1996 1.6 satria)

But yesterday, one mechanic i met said it is not necessary

Need some advise. Is it really necessary actually?

My logic thinking is; it is just additional negative wire which helps to discharge better. It wont disturb the engine system...