Fusing long negative cable runs? Engine-bay-battery to rear-battery-bank.

[WalledSonic]

I searched the forums a bit this morning and didn't find a definitive answer:

I am connecting the D3400 in the engine bay to my D3100 bank in the rear. The positive runs are fused at each end of the run (from front to rear). But, is there any need to fuse the negative wire runs?

I already understand the concerns with fusing in general:

-Fuses add resistance, possibly decreasing SPL

-Fuses add safety, helping prevent a fire when something goes wrong

Any knowledgeable advice is appreciated. I completely understand that I can get away without fusing the negative, I'm wondering if there is a legitimate reason to do it.

[MADVIBES]

you dont need to fuse the ground cable if the power is fused.

[Kyblack76]

what the fuck ......

[ShadeTreeMechanic]

A fuse on a ground would be unnecessary. The purpose of grounding the long positive runs is to prevent a short circuit if the cable gets pinched in an accident in the metal of the car. If a ground gets pinched it is still ground so no short circuit.